All the hot air about the MDI air car may experience a sudden cold downdraft. Not that cool breezes questioning its efficiency weren’t already wafting in the air. But now there’s a genuine academic study questioning the questionable. The NYTWheels has mined a study by the University of California at Berkeley titled “The Economic and Environmental Evaluation of Compressed-Air Cars,” which concludes that the air car “fared worse than the battery-electric vehicle in primary energy required, greenhouse gas emissions and life-cycle costs, even under very optimistic assumptions about performance. Compressed-air-energy storage is a relatively inefficient technology at the scale of individual cars and would add additional greenhouse gas emissions with the current electricity mix.” (Read More…)