Editing Hybrid vehicle (section)

====Petro-air hybrid====
A French company, [[Motor Development International|MDI]], has designed and has running models of a petro-air hybrid engine car. The system does not use air motors to drive the vehicle, being directly driven by a hybrid engine. The engine uses a mixture of compressed air and gasoline injected into the cylinders.<ref>{{cite web |url= http://www.aircars.tk/ |title=Learn everything about the compressed air cars! |website=Aircars.tk |access-date=2013-04-30 |archive-url=https://web.archive.org/web/20130520152900/http://aircars.tk/ |archive-date=2013-05-20 |url-status=dead }}</ref> A key aspect of the hybrid engine is the "active chamber", which is a compartment heating air via fuel doubling the energy output.<ref>{{cite web|url=http://www.thefuture.net.nz/mdi_tech.htm |title=MDI's active chamber |website=Thefuture.net.nz |access-date=2010-12-12 |url-status=dead |archive-url=https://web.archive.org/web/20110507151344/http://www.thefuture.net.nz/mdi_tech.htm |archive-date=2011-05-07 }}</ref> [[Tata Motors]] of India assessed the design phase towards full production for the Indian market and moved into "completing detailed development of the compressed air engine into specific vehicle and stationary applications".<ref>{{cite press release|url=http://www.tatamotors.com/media/press-releases.php?id=750 |title=MDI's air engine technology tested on Tata Motors vehicles |publisher=Tata Motors |date=2012-05-07 |access-date=2013-04-22 |url-status=dead |archive-url= https://web.archive.org/web/20130509064540/http://www.tatamotors.com/media/press-releases.php?id=750 |archive-date=2013-05-09 }}</ref><ref>{{cite web|url=http://www.gizmag.com/tata-motors-air-car-mdi/22447/ |title=Tata Motors enters second phase of air-car development |website=Gizmag.com |date=2013-05-07 |access-date=2013-04-22}}</ref>