Riversimple Urban Car
The Riversimple Urban Car is a conceptual open source hydrogen fuel cell vehicle that was proposed by Hugo Spowers' company, Riversimple, in 2009. Their latest model, the Rasa, was unveiled on 17 February 2016.
A working prototype vehicle was unveiled at the Somerset House in London on 16 June 2009, and as of 2009[update], with production initially planned to begin by 2013. The plan has been subsequently superseded with the intention to develop a production vehicle of a similar format but with a new design in 2015-16.
The Riversimple Urban Car was designed and developed in the United Kingdom by teams at Cranfield and Oxford Universities. It was financed by Sebastian Piech, the grandson of Ferdinand Porsche.
The Urban Car is a two passenger vehicle about the size of a Smart. It weighs 772 pounds (350 kg), and the prototype was constructed of a Carbon fiber composite material body. The car can reach speeds of 50 mph (80 km/h) and travel for 240 miles (390 km) on 2.2 pounds (1.00 kg) of hydrogen before refueling. 2010 calculations showed it could achieve the equivalent of up to 300 mpg in hydrogen, and a life cycle assessment carbon emissions of less than 30g CO2/km.
The Urban Car is powered by a fuel cell from Horizon Fuel Cell Technologies that converts hydrogen into electricity. This power supply functions like a battery, uses no moving parts, and emits only pure water. There are two novel principles involved with this project: decoupling of acceleration from cruising, and mass decompounding.
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