Nothing gives you quite a sense of how insane it is to take a 400+ horsepower Porsche GT3 rallying than this manic video, shot from the navigator's helmet. It's epic.

How the hell the navigator keeps his act together while the car is oversteering on tiny mountain roads surrounded by trees is beyond me. It's not just the rally drivers who have balls of steel, apparently.

(Hat tip to BtheD19!)