I think it's more the idea of giving up control than anything else. My new car has a self-parking feature and also a cruise feature that locks on to the car in front of you and matches their driving. I don't like using either of them, it just freaks me out. Has nothing to do with Christine!
Most traffic lights are automatically set or by sensor plate in the road, but we're talking about an integrated multi-car road system that is vulnerable to the kind of 'hackery' that took over that Air Force drone in the Middle East and took it for a joy ride over sensitive areas where people had jumpy trigger fingers before frantic handlers outside of Las Vegas finally regained control of it.... not to mention all the R&D money it'll take to get all this up and running, with all the outgoing employees/consumers being rapidly replaced by automated jobs, there won't be enough money to pay for it. It's a snake eating its tail. Excessive automation is a self-defeating practice.