On: Ditch the Batteries: Off-Grid Compressed Air Energy Storage

[tomohawk]

Also works for vehicles. Hydraulic hybrids capture 3x more of the braking energy.

https://en.wikipedia.org/wiki/Hydraulic_hybrid_vehicle

There's a retrofit for garbage trucks that pays for itself in 2 years, or you can buy them new.

http://www.govtech.com/transportation/Hybrid-Garbage-Miami-D...