Another name for super... is Double-layer capacitor.
They are being used in some locomotives and diesel trucks as well as many small devices.

The U. S. Government National Renewable Energy Laboratory is among the institutions working on their development. Lockheed-Martin aerospace is another.
Small ones are used in digital cameras to power the zoom lens.
Ultracapacitors

The ZENN Company of Canada claims to be developing an electric car without batteries that plugs in to recharge; they claim 80 mph and 250 miles on a charge.   EEstor of Texas is developing the storage unit.