First of all, hello everyone. I have a question that someone may be able to answer concerning the "range" of the Volt. I'm curious as to how the Tesla roadster(pure EV) can acheive a 220 mile range and the Volt only 40. How can a basically private company come up with 220 mile range technology, and a company the size of GM can't? Sorry if I sound uninformed, but I've just started reading about these cars. Thanks.