I'm willing to believe that computers are better at lane keeping than humans are. That's not the only scenario, though: Unfortunately, driving can go from lane keeping to making a life-or-death decision in a second, and that's not enough time for a human hand-off.
A plane's autopilot can beep and bail out to a human with a few seconds for them to get oriented and take over; a car doesn't always have that luxury.
"Is this a person walking into my lane or just a shadow?" isn't a question that comes up in the air. Until a self-driving car can minimize the probability of that detection going wrong to below human thresholds, I wouldn't feel comfortable sitting in the driver (or maybe even passenger) seat of one.
A plane's autopilot can beep and bail out to a human with a few seconds for them to get oriented and take over; a car doesn't always have that luxury.
"Is this a person walking into my lane or just a shadow?" isn't a question that comes up in the air. Until a self-driving car can minimize the probability of that detection going wrong to below human thresholds, I wouldn't feel comfortable sitting in the driver (or maybe even passenger) seat of one.