Compressed-air Car Proponents Losing Faith

Licensees of the much-hyped AirPOD minicar are pressing for results from Motor Development International, the Luxembourg-registered firm behind the compressed-air-powered vehicle. In recent postings to their websites and coverage by European news sources, some of MDI’s partners are now openly questioning the technology and MDI’s capacity to develop it — questions that Spectrum raised in November 2009 in the investigative feature, “Deflating the Air Car.”

When Spectrum’s feature went to print, MDI was guaranteeing mass-production of AirPODs within a few months at its development base on France’s Cote d’Azur. A year and a half later there is no sign of the promised minicars and their advertised 140-kilometer range, and outspoken licensees are blaming MDI. Continue reading “Compressed-air Car Proponents Losing Faith”

Tata and Berkeley Frigid to MDI’s Air Cars

Air France and KLM agreed to test a dozen AirPods from spring 2009 but still await delivery from MDI

Indian carmaker Tata Motors is voicing concerns about the range and durability of the compressed-air powered minicar technology that I critically analyzed for IEEE Spectrum this month (see “Deflating the Air Car”). Tata Motors invested in French air car developer Motor Development International (MDI) in early 2007, but yesterday Mumbai-based news source DNA reported that Tata sees ongoing issues with MDI’s technology.

Tata already sells vehicles that run on gasoline, compressed natural gas, and liquid petroleum gas and is launching a battery-powered sedan in Europe. However, Tata Motors’ vice-president for engineering systems S Ravishankar apparently told DNA Money that the company’s efforts to add air-powered cars to its fleet are hung up by range limitations:

“Air is not a fuel, it is just an energy carrier. So a tank full of air does not have the same energy as a tank full of CNG. Any vehicle using only compressed air to run would face problems of range.”

When asked whether this means that “the ‘Air Car’ project [is] off?,” Ravishankar declined to comment. Instead, Ravishankar added that excessive cooling of the air car’s pneumatic engine is also presenting a challenge. Continue reading “Tata and Berkeley Frigid to MDI’s Air Cars”