[2011G6E]

Been going on for years...in the early eighties I was an auxiliary fireman and after that apart time ambulance bearer (as they were called back then instead of paramedics or whatever...).
You'd sit behind people with a massive red fire engine, lights flashing all over it, and sirens blaring, and they'd just keep cruising along oblivious to you sitting right up thier clacker.

Of course, there were a few ambulance officers and firemen that had to be sat on, because some of them thought that flashing lights meant you could blow through intersections as fast as you liked and traffic would magically stop for you. We were trained to treat each intersection as a give way...yes, ignore the red lights or stop sign...but slow down a bit and be careful, because visibility for cars coming from the side street might not allow them to see you until it's too late.