It's not about money it's about the fact that if you cock up, you could kill anyone else on the road you do not have that right, you do not have the right to risk their lives for fun
If you were to ask anyone who I've ever given a "demo" to, it's always way out of town and after waiting for people in front to turn and oncoming traffic to pass until it's clear for miles.
So... who else are we talking about exactly, besides willing participants?
Most people are rear ending others, and locking up their ABS and leaving tire marks every other light because they follow to close, aren't paying attention, and driving too fast. Go nuts on those people "not following the law".
Then there is me always aware and anticipating and coasting in advance and not even needing to touch the brake 99% of the time even when everyone else comes to a dead stop for no reason. I'm the least of your "worries".
Even "stepping on it" in traffic is a short affair often lasting no more than a single second for the simple fact that I CAN'T stay it it longer without causing a 6 car pileup in FRONT of me, so I guess that problem takes care of itself.
For the 1 time I speed there are 99 times I'm going 5-10 under (when everyone else is speeding) just because the road sucks balls; lumpy and full of pot holes and unsafe. Same goes for when it's 30 deg out, night, etc. If you don't get the concept of self policing, you don't get it, fair enough.