of London (tim minchin)

And their ambulances are green! It's crazy. And it's weird cause they are around all the time in London and they've got written on the side with big green letters EMERGENCY AMBULANCE which is good for a tourist like me because it distinguishes them from normal ambulances - they are slightly more laid back, they don't really merge...they just kind of ambulate...hang out in parks...like massively over-equipped Mr Whippy Vans.