I find this a really interesting concept but really hard to pull off on a big scale. First of all I thinkg battery energy density will have to multiply a few t

I find this a really interesting concept but really hard to pull off on a big scale. First of all I thinkg battery energy density will have to multiply a few times. Traffic will have to be actively monitored 24/7 to avoid collisions, avoid vehicles going through no-fly zones. Crashes would also be a lot worse, possibly crashing into houses, schools, hospitals. Not trying to be overly critical, just a fun thing to think about.