If he gets the manufacturing costs down and the volume up, could the service possibly be cheaper than the typical $50 fill up? That would be a game changer.
Cost reduction plays a huge (if not the biggest) consideration in going electric.
http://www.teslamotors.com/it_CH/forum/forums/cost-charge-an...
Linking to:
http://teslarumors.com/USA-Residental-Energy-Cost-2011-by-St...