Grass him up to his bosses. Ambo are some of the worst out there. Even the properly trained driving responders live in a world of their own when it comes to the rules and regs they still have to observe under blue lights - ok, they may well be rushing to save a life, but that doesn't justify endangering someone elses life in the process.
Ambo are least likely of the services to 'close ranks'. They're a civillian organisation manged by - usually - non clinically qualified managers and pen pushers, and that sort of office wallah loves nothing more than standing on a drowning mans shoulders to keep their own heads above water. you know the sort, the ones that never ever contribute anything useful or productive to society themselves, but who are nevertheless happy to **** over those who do.