[solarguy]

I haven't done the math, hmmm, not even sure I could do the math any more.

Anyway, I suspect that the energy density of basically a spring (compressed nitrogen) can't hold nearly as much energy as the same weight battery. So, effectively, it may only provide limited energy recovery and limited "start up" power, for the weight and expense. Under the right circumstances, start/stop/start/stop/start/stop, it might provide about the same benefit as the electric hybrid.

I wonder...


Finest regards,

troy