[vagarwa]

Electric cars are an order or magnitude simpler mechanical devices as compared to IC engine cars. Once an affordable battery chemistry (or any other cheap energy storage mechanism) is figured out, a lot more electric car companies will get started (I am hoping for a healthy 'car-kit' market). Tesla is the 'best' in the sense that it has the best technology to handle the idiosyncrasies of Li-ion battery (they like to burn themselves the first opportunity they get!).