European car owners are confronted with the very real possibility that wild animals will invade and eat their vehicles. To combat this danger, engineers at Audi rigged a car with multiple cameras and recorded what happened when martens were allowed access. From Autoblog:
In Europe it is a common problem to have wild, ferret-like animals crawl into the engine bay of cars while parked and idle and bite through brake/power steering and other lines/hoses. Audi Deutschland's quality control is seeing where the ferrets go within the engine compartment, which lines they chew on. Based on the video, they will then look to use different materials that a ferret doesn't like biting into. Looks totally random, but it is an issue in Germany and Europe in general.
The video is in German, but that really doesn’t detract from the content. -via Metafilter