I have become quite understanding of the police recently, and really agree on a lot of stuff they do (As seen in the little 'debate' with Coco ) But this really does not have an excuse, you cannot clear this guy and then ban or jail the general public for similar situations. If you want to test a car like this out, get on a track, a runway, a private area that is built for these sort of things.
Once again, I will tow the line: "One rule for them sometimes, another rule for everyone else."