Grüter & Gut Motorradtechnik GmbH in Switzerland is a motorcycle customizer that offers something unique. How about a BMW-powered on road ATV? This little four wheeler is sure to bring you close to the edge. With a 85-bhp boxer engine, this can reach 100 mph. You can be certain it will get there in a hurry. Not quite as extreme as the Subaru powered quad we showed you earlier.