BMW has announced the start of production of the new BMW Hydrogen 7, the world’s first hydrogen-powered luxury saloon car. Destined to make its first public appearance on 28 November at the Los Angeles Motor Show, the Hydrogen 7 will be built in limited numbers and offered to selected users in 2007. The BMW Hydrogen 7 is based on the existing 7 Series and comes equipped with an internal combustion engine capable of running on liquid hydrogen or petrol. In hydrogen mode the car emits nothing more than water vapor. Powered by a 260hp 12-cylinder engine, the Hydrogen 7 accelerates from zero to 62mph in 9.5 seconds before going on to an electronically limited 143mph top speed.