Hmm, that's makes me wonder how driving lessons work in US. In Poland it is a legal requirement that the car used for such purpose has a second set of pedals on

Hmm, that's makes me wonder how driving lessons work in US. In Poland it is a legal requirement that the car used for such purpose has a second set of pedals on passenger side, where instructor sits. When I took a driving lessons my instructor was perfectly capable of pressing the brake or overtaking the wheel on time when I was about to do something stupid. I don't see why manual override of autonomous car should be harder. I see however, that this can easily defeat purpose of using autonomous car: if the driver must be fully concentrated all the time, be ready to react, then it is even worse than driving normal car.