The desire to listen to tunes on the road has led to all sorts of innovations. It's where Motorola got its start, it's where eight-tracks lived and died, it was the impetus for the invention of satellite radio... But this, this is something new.
The vid embedded after the jump is an older one, dating back to Marcus Grönholm's days as WRC factory driver for Peugeot (he's with BP-Ford now). It's brief, but well worth your time, as it details the story of an in-car mishap involving a stone and co-driver Timo Rautiainen. The payoff comes at the end, when Grönholm explains in very simple language what happened, and then backs it up with a descriptive gesture just in case you didn't understand. Classic.