If we are just looking at consumer cost, I listed my sources for the 2.8 factor based on averages for 2007:
http://ecomodder.com/forum/showthrea...tml#post101182
But I made a mistake in the cost comparison (just went btu to btu). If you put
10 gallons in a car, that is indeed enough energy in terms of BTU equivalent to send a Tesla (for example)
3300 miles. So cost per mile has to be factored in to the 2.8 energy to energy cost, because I guarantee the average car on the road didn't get 1180 miles out of 10 gallons of gas.
Lets say in the us the average passenger vehicle on the road in 2007 got 25mpg (generous), and can go 250 miles for 10 gallons worth of gas, that means that the EVs in 2007 were getting
13.2 TIMES as many miles per dollar!!.
So if we want to be "fair" on a cost basis you would have to
multiply ev costs per mile by 13.2 (based on 2007 figures, probably worse in 2008) to compare them to gasoline costs per mile. And thats just consumer costs, not taxes repurposed for subsudies or military spending or nothin.
note: I do not have any stats on average watts/mile in 2007 handy, this is just based on a tesla, and a very rough guess about average mpg in 2007.