On Penn And Teller's "Bull Shit" they asked some hard environmental questions, all the while maintaining their brash and caustic sarcasm which viewers like you (an me) may find hilarious. They have addressed such issues as organics, hybrid cars, electric cars and nuclear power. They even went through the process of detailing how a hybrid car is actually more costly to the environment, simply through its creation, than a Hummer.
Cecil, a columnist on straightdope.com, addresses these concerns as some other pensive people wrote to him. What he says is very eye opening. He says that in any form it costs the environment and economy and you to get energy to your door. Through creation there is usually going to be petrol used in plants.
However, there will still be petrol used in plants to create hummers as well. Which is something Penn and Teller neglected to delve into. But, Cecil describes, even with the use of petrol in manufacturing and delivery, Plug-in Hybrid electric vehicles (PHEV) and Battery electric vehicles (BEV) still get what amounts to 188mpg fuel economy equivalent when talking of the manufacturing and delivering of such a car.
He also details that it is easier to put environmental restrictions on the plants themselves and that would actually save more for our environmental health.
Sources
http://www.straightdope.com/columns/read/2759/are-electric-cars-really-more-energy-efficient
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