Tessla's sensors were too low resulting in blind spots. Their excuse was a white truck against a white background despite ultrasonics/ radar etc.
They say they've done some 163,000,000 miles of testing.
Total driverless is some decades away - cars will need to be almost sentient plus there cant be any communication blank spots with GPS and 5g/ 6g networks. Things like emergency vehicles will need to communicate with nearby vehicles to move to a safe position while it passes, will zebra crossings still be in use? Crossings and traffic lights will need to communicate with driverless vehicles on cross platform networks.
*A warning from the current 'smartmeter' rollout from the electricity supply industry says a lot. The new smart meters being installed have to then be taken out if you change supplier, they are not cross compatible with other companies' software/ comms systems. Now transfer that over to say Ford and PSA for arguments sake - will US congress allow for US intellectual property to be accessed by other companies?
The ingredients are there, just a little more processing power and faster networks.
I look forward to it!