This is the crowd I grew up with, so I may be the unkowning carrier of disinformation, but here is my read:
All drove very fast. They did get ticketed frequently stateside, but the personnel office had resources. Justifications were welded onto all damage.
A small number drove mad fast because they couldn't pull out of some high-danger mentality even after the helicopter lift. They flouted the law like city kids who are "in the system", since they felt doomed anyway. You can see that kind of driving around the exits for military bases, where soldiers drive ninety to work because that is their permanent risk profile.
But most were just trying to feel the thrill, to act like the real thing. They had race-car training and cop evasion training and could surprize you when they decided to treat some ordinary sight as a threat. But they suffered that ordinary human pathetic weakness for emergency powers and a starring role.
Of course, the British are pioneering. Wait for the feedback effect, when someone challenges the phony backstory for a traffic death, and a file is opened on this new strain of domestic saboteur.