I haven't driven one of these cars...is there anything stopping the driver from nudging the gear selector up to neutral?<p>I also don't agree with your point about point #3 being a sound decision on its own.  Keyless ignition is convenient, but there's no reason not to have a kill switch besides aesthetics.  And they probably could have designed an aesthetically-pleasing, small kill switch.<p>Moving up a level of abstraction is only great when it works the way it's supposed to, and there should always be some sort of manual override for the rare, untested cases when it doesn't.