> investors have mostly bet on full autonomy

lol.

I used to live on one of the side streets in MV that Google's AV cars trained on. Saw three in a row once. They were usually the only traffic, so that annual report of millions of miles travelled was meaningless - they might as well have driven arounf the Safeway parking lot at 5 am.

I guess passenger-carrying quadcopters is next. Oh wait ...