Batteries

Two factors influence the feasibility of a battery type:

• How many Wh / kg can the battery store?
• What is the Price per kWH

see the calculation at http://www.withouthotair.com/cA/page_261.shtml how the first factor influences the achievable range of an elecrical vehicle powered by a battery.

$240-$280 per kWH for a Tesla according to http://www.torquenews.com/2250/what-makes-tesla-s-batteries-so-great