Jayray2,
I was using the graph from this website.
http://finance.yahoo.com/currency/co...submit=Convert
For the past 3 months, the dollar has been relatively constant with respect to the euro (at 1.55 dollars to 1 euro). I am just trying to convince some people that the falling value of the dollar has little of anything to do with the recent price jump from $100/barrel to $130/barrel. I don't like people who say "It's all because of the falling dollar, and when the value goes up, the price of oil will be back at $50/barrel."

BS. The price of oil probably will never be below $100/barrel again.

As for the environmental impact of batteries, I think people seem to forget that our gas powered cars use a lead-acid battery. Lithium or lithium-ion batteries would probably have the same environmental impact as our current lead-acid batteries. Plus you would get quite a bit of money for recycling lithium/lithium-ion batteries. I don't buy the argument that electric cars are worse for the environment. They are certainly better for our nation and our economy.