>I would hope the cops have better things to do than watch videos of people tailgating or changing lanes without signalling, frankly (as much as these may annoy me).

Agreed, but I'd imagine you could hire people who had that as their primary job, and then make serious bank on the resulting fines.

I can't imagine a single driver who hasn't seen some twit driving like a maniac and thinking "where's a cop when you need one"?