No one is saying you can't drive, yet. Presuming that computers eventually are better than people at driving, can we as a society continue to allow humans to self-control death machines in close proximity to each other?
Also, the presumption that computers can get better at driving is wishful thinking. Good enough definitely, more efficient probably, but better? I don't think so.
From a technical perspective, the human brain is the best pattern matching processor in existence and when driving it's the edge cases that cause accidents ... a deer or child stepping in front of your car, bad weather conditions leading to muddy roads or glazed frost, potholes, traffic congestions, human-powered vehicles (like bikes) and the list goes on, with the number of variables and possible outcomes possible being really big.
And for instance a processor can't know your safety priorities. Say a child steps in front of your speeding car, would your risk pulling the wheel and going off-road to avoid the hit? I would. But what if your own son is in the backseat? Then I would hit the breaks and hope for the best. But what if you're going 90 miles on the highway and a cat steps in front of your car? Personally, I wouldn't even hit the breaks, even though I love cats, because sudden breaking on the highway is very dangerous.