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Researchers and manufacturers are developing compressed air-powered vehicles (CAVs) as an eco-friendly alternative to traditional petroleum-powered automobiles.

Tata Motors, India’s largest automobile manufacturer, has partnered with France-based Motor Development International to create air-powered vehicles that weigh less than 2,000 pounds and can travel at speeds up to 68.3 mph. Highly compressed air is transferred from stationary compressor stations to the CAV’s storage tank. The air is converted to mechanical power by a pneumatic motor.

Manufacturers can produce CAVs at 20% less cost.