The Patriot was a turbine dowered car that stored energy in a flywheel and was built by Chrysler in 1993.

Running on Natural Gas the Turbine engine ran between 50,000 and 100,000 rpm and weighed 186 lbs and “charged” up the flywheel and used regenerative braking to recover energy when slowing. The regenerative braking system is currently used in Formula racing today.