The company unveiled computer hardware for what it said was “full self-driving” capabilities in the form of the new microchip.
There are still technical and legal challenges ahead for driverless cars, which currently are not deemed as sophisticated or roadworthy as cars with drivers, nor safe enough for public roads.
Mr Musk said its custom-designed chip was the best available and a significant milestone in self-driving.
Tesla’s vehicles are not yet at the standard of autonomy needed to earn the tag “self-driven”.
Level 4 autonomy means a vehicle can drive itself with a human on standby, with level 5 the standard needed before it can be called truly autonomous of human agency.
No Tesla car is at either level so far.
Mr Musk had promised previously that self-driving cars would be on the road in 2018.
Khan was knocked down in the first round by Crawford and was behind on all three judges’ scorecards when the fight ended.
Crawford – who has held world titles in three weight divisions – drove a left hook into Khan’s groin 47 seconds into the sixth, leaving him in “too much” pain to continue.
“I thought Amir Khan looked awkward, his balance looked poor, his shot selection wasn’t great,” Bunce added.
“Sometimes his feet can be bad when he’s lazy. That’s not a criticism, that’s a fact.
“We’re looking at a kid who should retire now. I’m looking at the end of the fight, being outclassed even though you’re fighting your heart out, how poor his feet were, how desperately he missed sometimes.”
‘He wasn’t looking for a way out’ – did Khan quit?
Khan’s trainer Virgil Hunter said the boxer was “incapacitated” by Crawford’s low punch, with Khan adding he “couldn’t think straight” after the blow.
On Sunday, Khan once again rejected Crawford’s claims that he had quit, saying on Twitter “I’d rather get knocked out cold” – before revealing he was “peeing blood”.
“I don’t think there is any suggestion he got hit with a half shot and decided to quit,” said Bunce.
“Crawford doesn’t think he hit him low, so of course Crawford thinks he quit because he thinks he hit him with a legitimate shot.
“I’ve looked at it in some detail and it definitely comes from the leg and looks like it goes into the groin protector. Can that catch you at such an angle? Yes it can.”
Khan has faced criticism throughout his career, both in and out of the ring, and Bunce believes Saturday’s finish could add fuel to the fire.
“It’s going to run and run, because it will suit some people’s agenda to add ‘quitter’ to ‘glass chin’, to add ‘quitter’ to ‘flash so-and-so’,” Bunce added.
“I can’t say with certainty that he quit. I can’t say with certainty that at that point he was hurt enough.
“But I know for one thing that he wasn’t looking for a way out.”
Former world champion Barry McGuigan said it was “very dangerous” to call Khan a quitter.
Speaking on BBC Radio 5 Live’s Sportsweek programme, McGuigan said: “You look at Khan’s career and the fights he’s been in and the one thing he always had was immense courage, determination and getting up off the floor.
“You think of the Breidis Prescott fight, the Canelo (Alvarez) fight, the Danny Garcia fight – there’s no quit in him.
“I just think he took the intelligent option and got out because he was down.
“If he’d gone on and been humiliatingly knocked out and dropped several times and then flattened, then people would have been calling for him to stop.
“Now I suppose with Virgil Hunter’s decision, he’s got the chance of resurrecting the possibility of a fight with Kell Brook somewhere down the line.”
Kenyan Peter Tabichi, who has been teaching for 12 years, was recently named the best teacher in the world.
The science teacher and Franciscan friar at the Keriko Mixed Day Secondary School spoke to BBC Africa about what winning the Global Teacher Prize means to him, what might make him stand out from other teachers, and what he will do with the US $1 million prize money.
Video journalists: Gloria Achieng and Eugene Osidiana.
Beyonce, the queen of surprise and so much else, has again dropped a record with no warning: a live album to go with an upcoming Netflix documentary on her performance at Coachella last year.
Beyonce The album entitled “Homecoming,” just like the film, was released in the early hours of Wednesday across all major streaming platforms, including Apple Music, Spotify and Google Play.
It breaks that more than two-hour performance — she actually took to the stage twice last year at the Coachella Valley Music and Arts Festival — into 40 tracks.
Beyonce was the first black woman to headline the festival.
Her set paid tribute to the musical heritage of historically black American colleges and she was backed up by dozens of dancers and a marching band.
The 200-year-old former royal palace that housed Brazil’s national museum in Rio de Janeiro was gutted by fire in September last year. Flames tore through rooms containing some 20m artifacts; very little survived.
Bruna Arakaki, a graphic designer from Rio, watched the blaze from her apartment. She says seeing the Notre-Dame fire in the news brought that sadness back and evoked a sense of solidarity with Parisians.
“It felt like part of who we are and our history burnt alongside the museum,” she says. “People were very fond of it. It was in a poorer part of the city and was one of few museums in that area. For many generations, it was the first museum they visited.”
Many people have blamed the authorities, saying a lack of funding had left it vulnerable. “Watching it burn, there was a feeling of impotence and revolt,” says Ms Arakaki. “It was so imposing and had been there so long, no-one expected that one day it would just end.”
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Filmmaking student João Gabriel Barreto was an intern at the museum in 2014. He is still in a WhatsApp group with his old colleagues, and they shared tearful, panic-stricken messages on the night of the fire.
“We didn’t know what to feel or think about it. It was so messed up,” says Mr Barreto. “It felt like a huge part of our bonding was being ripped away from us.”
He has not been back to the site as he cannot bear to see it as an empty shell.
President Jair Bolsonaro sent sympathies to France on Monday, but has previously emphasised that he cannot “work miracles” to rebuild Brazil’s national museum. “It has already burned – what do you want me to do?” he said last year.
Syria: Palmyra
Syria does not have the luxury to consider rebuilding its lost culture amid its civil war. The conflict has claimed hundreds of thousands of lives and destroyed many of its most precious cultural sites.
Among these is the ancient city of Palmyra. Photographs of it lying in ruins made international headlines in 2017.
“It’s controversial,” says Khaled Nashar – a Syrian who left the country in 2015 and is now based in the UK. He is referring to how Syria talks about its cultural losses. “One could think it is selfish to look at the loss of ‘some stones’ and not the loss of people.”
But can both feelings co-exist?
Hazza Al-Adnan, a lawyer turned journalist living in Idlib, describes it as a different sort of sadness. “It is a kind of regret. It is not the same grief as when people die,” he says.
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He lives in one of the last remaining rebel strongholds. “Next to the city where I live, there is a Roman archaeological village called Shansharah. The war has destroyed much of it and then turned into a camp for the displaced,” he says.
He also remembers the day he first heard that Palmyra had been ruined, and how it still stunned him – even amid such constant disaster. “It was a shocking event. Isis does not give any value to civilisation and human history,” he says, adding that the fact that it was deliberate made it much worse.
Mr Nashar agrees that it is hard to process. He says: “The feeling of sadness is even greater when you realise the country has not been only losing its future, but also a significant part of its past.”
Haiti: Presidential Palace in Port-au-Prince
Business student Naomi Handal, from Haiti, lived through her country’s 2010 earthquake, and now lives on the same street as the Notre-Dame in Paris.
“The hard thing about Haiti was knowing the destruction came from natural causes. It was not an accident, there was no-one to blame, there was no reason why. It is like something that cannot be tamed. It could happen again,” she says.
Around 160,000 people died in the magnitude seven quake. The government of Haiti estimated that 250,000 residences and 30,000 commercial buildings collapsed or were severely damaged.
Amid all that carnage, Ms Handal said there was a “disorientating” feeling that came from losing the presidential palace. “It symbolised the government and when you saw they were impacted too, you did not know whom to turn to. We were so lost.”
There has been talk of rebuilding it, and France offered to help, but the proposal split opinions. Some feel there are still too many other priorities.
“The symbolism of the National Palace is very important for Haitians,” says Eveline Pierre, executive director of the Haitian Heritage Museum, based in Miami. “Haiti was the first black nation to gain independence and the palace represented this for each individual. That is something that cannot be taken away.”
She says many other buildings were also lost, including Port-au-Prince Cathedral and the Holy Trinity Cathedral, with its important murals of Biblical characters depicted with black skin. “There are many cultural losses that were, for sure, undocumented and no-one knows the full extent,” says Ms Pierre.
As of Tuesday night, Ms Handal has been unable to return to her Paris apartment.
“It is sad, a tragedy,” she says. “But around the world, there are so many worse things going on. It sounds so blunt to say it. But nobody died.”
She worries now about the small businesses around her apartment, because they rely on tourism.
Germany: Dresden‘s Frauenkirche
Dresden’s Frauenkirche (Church of Our Lady) was destroyed by bombing in World War Two and left in ruins for decades.
After the reunification of Germany in 1990, its reconstruction became a metaphor for reconciliation. It was finished in the mid-2000s, thanks to a €180m ($217m) project, mostly based on private donations.
Raka Gutzeit, a retired English teacher, has lived in Dresden since 1994. “We were all very moved when the renovation started,” she says. “It was based on so much goodwill. There were workers from all over Europe, working all hours. It was beautiful to watch.”
Some people she knew moved back to the city because of their emotional attachment to the Frauenkirche.
She admits it has taken a while for the new building to blend into the city. “It needed some greenery around it and it looked so bright at first,” she says. “It is still becoming part of people’s lives again.”
David Woodhead, a former trustee from the Dresden Trust, a British organisation that helped raise funds for the project, says the Frauenkirche has the same sort of significances for the people of Dresden as Notre-Dame has for Parisians.
“It was a prominent part of the Dresden skyline, featuring in so many 18th Century paintings,” he says. “During the 1945 bombing raids, a firestorm caused the original building to melt. Sandstone melts at 800C (1470F) and temperatures were said to have reached 1000C, so it imploded.”
It was something no-one thought would be possible and it created a profound sense of something being “missing”.
He says there was controversy over whether it should be rebuilt in the same way or take a new form, but ultimately its Baroque grandeur was restored. “It is not intended as a war memorial, but to be looking forward,” he says.
Ms Gutzeit agrees. “Notre Dame is much bigger and older than Frauenkirche, and it has much more international status,” she says. “But I hope Dresden’s story brings hope to Parisians.”
Parisians are examining the full extent of a massive fire at Notre-Dame cathedral.
The fire, which brought down the spire and roof, was declared under control almost nine hours after it started.
President Emmanuel Macron has vowed to rebuild the 12th Century cathedral, describing the blaze as a “terrible tragedy”. Hundreds of millions of euros have already been pledged.
Images from inside and outside the cathedral show the extent of the damage.
