okfine
Diamond Member
I know you don't like getting poo-pooed, so save your own crap.Regenerative braking systems is new?
Regenerative braking is an energy recovery mechanism that slows down a moving vehicle or object by converting its kinetic energy into a form that can be either used immediately or stored until needed and where have you been? It's been around for the last 57 years?
And "fuel cells"... geez...The first fuel cells were invented by Sir William Grove in 1838.!!! Fuel cell - Wikipedia
So what's your point? Both over 50 years ago and longer... so??