I think to truly realize self-driving cars we need to rethink vehicles. Either put cars on rails like maglev that routes them around foot traffic (still not pe

I think to truly realize self-driving cars we need to rethink vehicles. Either put cars on rails like maglev that routes them around foot traffic (still not perfect - people do die by trains, but more controllable - usually it's their dumb fault or suicide), OR hover cars that fly about 15 feet off the ground - high enough to dodge 99% of obstacles/bikes/pedestrians/etc. They could even "stack" vehicles then if there's congestion one group @ 15 feet the next at 45 feet. Sure there's a lot of tech required for that, but it seems easier to pilot drones by ai than it does cars on streets with so many variables unknown.