I'm sure I'd live to regret this idea but I really wish I could send video of other vehicles breaking the law to some government agency and have them fine the drivers of those cars. And, I don't really care they don't know who the driver is. Fine the owner of the car and then the owner can decide if they trust the other people to drive the car.
I know that I'd probably get some tickets myself but my belief is that we'd be safer overall if more people obeyed the traffic laws and that they would obey them if they were likely to get caught.
Also, I don't need a cut of the fines.