want better mileage ?

[Corbusa]

http://news.yahoo.com/blogs/this-could-be-big-abc-news/kit-turns-car-hybrid-170717691.html

[scottfab]

Wow thanks for sharing.
I will be tracking this.
First thing I will investigate is how many batteries it takes.

[USAFPILOT]

I'd like a more powerful version of it for my truck; but I'm not filling the trunk of the Z with batteries.