The air car - The Indian carmaker has inked the deal in this regard with with French company MDI for the car. According to the report, MDI’s Air Car can be powered by an external compressed air pump or by an internal compressor running on petrol. According to a document on the MDI Air Car, the technology used is different from what we see on the road today. The document explains that compressed air technology allows for engines that are both non-polluting and economical.