Editing Compressed-air car (section)

===MDI===
{{Main|Motor Development International}}
[[Motor Development International|MDI]] has proposed a range of vehicles made up of [[AIRPod]], OneFlowAir, CityFlowAir, MiniFlowAir and MultiFlowAir.<ref name="autogenerated3">[http://www.aircars.tk/ Learn everything about the compressed air cars!] {{Webarchive|url=https://web.archive.org/web/20130520152900/http://aircars.tk/ |date=2013-05-20 }}.</ref> One of the main innovations of this company is its implementation of its "active chamber", which is a compartment which heats the air (through the use of a fuel) in order to double the energy output.<ref>{{cite web |url=http://www.thefuture.net.nz/mdi_tech.htm |title=MDI's active chamber |publisher=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> This 'innovation' was first used in [[torpedo]]es in 1904.