Rinspeed's Frank Rinderknecht evidently isn't the only batty Swiss in the belfry. Check out Gruter Gut's latest creation, the GG Quad.

Rocking the road on 16" alloys, the BMW 1100cc-powered hybrid puts 90 ponies to the ground via a six-speed gearbox. Top end for the crazy quad is about 106 mph-- a total that doesn't sound all that impressive, but is likely scary enough in real-life.

Price? Well, the design isn't the only 'insane' thing about the GG Quad. The $43,000 asking price is barking mad as well.

Check out the full details at GG's official site here.