Again, the Jetsons don't use cars. A car is a ROAD vehicle. Technology that takes care of your noted issues already exists as well (not the stop 'n go bit). Smart cars that sense when you're falling asleep, so they make a quick jerk to wake you up (latest Benz? BMW? forgot which). GPS leads the way. External sensors, already used for parking assist, in addition to the traffic info that can be broadcasted via radio waves can be used to prevent collisions. The newest premium Garmin GPS has lifetime free HD traffic. It receives updated traffic info every 30 seconds. Of course, it doesn't exactly work in 3 dimensions but it would be trivial to equip them with a type of barometric altimeter. IF you have enough money, it can be done.
Don't forget the video posted here not too long ago where they used sound to suspend stuff and move it around in mid-air. Perhaps there's something to the awkward humming noise in the old movies when a UFO was flying around...
Just broke my personal record for number of consecutive days without dying!
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Re: You can't win this one
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Polar vortex can suck my dick
