Imagine how bad your average driver is on a single plane of movement. Like, they're already going forward and can move in a single other dimension and look at the chaos we already have.

Now let's go on and add the vertical axis and the exponential difference that makes in just how much a single human can utterly fuck with one or more others.

Now let's add road rage into the mix and give people the ability to straight up dive bomb anybody they get mad at.

I don't ever want flying cars in the hands of the masses. Ever.