Better start rearranging your garage and making room for a new car, as Mercedes-Benz have come up trumps with a model that’s bound to get piston-heads salivating. Heck, even I’m salivating, and the extent of my car-interest revolves around perving on Richard Hammond and Jeremy Clarkson as they perve on the latest cars on Top Gear.

The 2057 Mercedes-Benz SilverFlow concept car has been shown off at the 2007 Design Challenge competition, and the luxury car company is saying due to its micro-metallic materials, it can…