Motorcycles powered by a compressed air engine could cut vehicular emissions in developing countries by more than half, according to Indian researchers.

The engine, which uses a compressed air tank to power a turbine, could be available to consumers within a year, said Bharat Raj Singh, a researcher at the SMS Institute of Technology in Lucknow, India and one of the developers of the engine.

A prototype, modeled in a paper published in May in the Journal of Renewable and Sustainable Energy, is capable of running a motorcycle at speeds of up to 50 mph (80 kph) for 30 minutes. [Read "Cool Vehicles You'll Never Get to Ride."]

via Motorbikes Could Run Efficiently on Air | LiveScience.

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