As I flight instructor, I really can’t see the “flying car” evertaking off (pun intended)even if it were only 40K!
It’s difficult enough to teach some to drive a car let alone an airplane!(Just imagine the idiot who cuts you off in auto traffic flying about!)
You’ve identified why the skies wouldn’t resemble a freeway at rush hour, even with inexpensive gyro-planes. If you go to the website or see one fly, however, it is amazing.