[ZenGum]

For added fun, if you are driving in extreme temperatures and the engine starts overheating, there is one way to dump extra heat.

Turn the heater on.

Yep, it draws heat out of the engine. Never mind that it dumps it on you. The car must go on.

I found if I used the windscreen defogger and had the front windows open just a crack, this would draw most of the hot air straight out.

The rest is water. In, on, around.