[ROCKLOBSTER]

All-electric cars are expensive toys for ‘regular’ driving.

I'm not talking about a battery powered car, but rather electric propulsion.

[mrsmith]

http://berc.berkeley.edu/storage-wars-batteries-vs-supercapacitors/

They’re working on it...

“The main shortcoming of supercapacitors is their low energy density, meaning that the amount of energy supercapacitors can store per unit weight is very small, particularly when compared to batteries. Additionally, the cost of supercapacitor materials often exceeds the cost of battery materials...”