August 16, 2005 A BMW powered by hydrogen small enough to race around a lounge room has been built by technology students in Germany. The revved up racer is an authentic replica of the hydrogen-powered BMW that set nine speed records last year, including exceeding speeds of 300 km/h. The full size racer used a modified V12 6.0-litre engine borrowed from the $335,600 BMW 760Li. It was powered solely by hydrogen, just like the 1/8th scale model built by students at the Ingolstadt University of Applied Sciences. The scale model makes do with a slightly smaller engine of just 11.5 cc. Like the BMW H2R V12 racer, the scale model emits only water vapour from its tailpipe, making it entirely suitable for racing around the house. It has a top speed of 80 km/h.