You might laugh, but you'd be grateful if it was happening to you.
As cars get more and more complicated every year, the amount of damage that rodents can do if they get into the mechanical workings becomes more and more serious. This is evidently a very serious problem in Europe (and we've heard plenty of anecdotal evidence from this side of the pond as well), so Audi is now studying the issue. They've wired up an A3 Cabriolet with GoPros and turned stone martens loose on it.
The engineers will see what they destroy and try to work out ways to better protect those components.