Liquefied Air Could Power Cars and Store Energy from Sun and Wind

A 19th-century idea might lead to cleaner cars, larger-scale renewable energy.

http://www.technologyreview.com/news/514936/liquefied-air-could-power-cars-and-store-energy-from-sun-and-wind/?utm_campaign=newsletters&utm_source=newsletter-daily-all&utm_medium=email&utm_content=20130520