Shocking collisions come with the territory of high-speed motor races, but it is not often a car ends up on top of another without there being a serious pile-up. But on the third turning of the Circuit de Navarre race in Northern Spain, that is precisely what happened as one Porche car was left with absolutely nowhere to go, mounted on top of an opponent. Barely 20 seconds into the Porsche Carrera Cup, two cars ended up going bumper-to-bumper, with one hapless driver left wondering how to get out, and the other no doubt fearing if his roof was about to cave in.