Yeah 70,000 per day will do jackshit ...The electric batteries in cars are basicly the same as whats in your computer but larger,litiuaniun batteries (bad spelling) but they only last soo many years before they have to replaced and my guess is that it would be expensive to replace.From what i know about hybrid cars the batteries in them have to be replaced every 5 years at a cost of $4000.00.So the money you save in gas youll have to put into batteries which is a crock of shit and the hybrid cars only get slightly better gas milage i think 40-50 mpg where my car gets 35 mpg