When I was 14, me and a mate used to wash the trucks at a local firm on a Sunday morning. We had a massive Kew pressure washer with a 40m lance that would strip the paint from some trailers if you get the lance too close to the vehicle. You could adjust the heat from cold, to hot plus soap, to pure steam
That was very powerful, would certainly shift bugs and we had a right laugh and there was plenty of ■■■■■■■ about I was filthy as we washed the whole fleet including trailers, and as the place was an animal feed mill, the stuff would cover you by the end of the morning.
Great fun