I got to go see a Zap Zebra electric car today.
The rear axel setup looks to be exactly the same as the Citicar.
http://web.mac.com/benhdvideoguy/iWe...s/DSC05609.jpg
It uses an Alltrax 72 volt programmable controller, but I am not sure at how many amps.
This dealer added another battery in so he has 84 volts for more speed. He said the controller had no problem with this.
The batteries are in a tube inside the car in a box with a bolt down lid, and a few more batteries in back.
This Zap is a three wheeler, so it is technically a motorcycle, thus avoiding NEV laws and limits on speed.
I have a couple more photos on
my photo page