The third axis adds the risk of a gravity impact to every accident. Maybe it's solvable with some kind of failproof parachute system, I dunno. I wouldn't invest

The third axis adds the risk of a gravity impact to every accident. Maybe it's solvable with some kind of failproof parachute system, I dunno. I wouldn't invest in it. Showing that cars are scary doesn't disprove that flying cars are more scary