Additional Information (These articles can be pretty useful)

Alternative Fuels (What are they)
http://www.fueleconomy.gov/feg/current.shtml

Hybrid Vs. Gas Comparison
http://www.carseek.com/articles/hybrid-vs-gas.html

Plug-in Hybrids
http://www.fueleconomy.gov/feg/phevtech.shtml

Fuel Cells
http://www.fueleconomy.gov/feg/fcv_PEM.shtml
http://www.fueleconomy.gov/feg/fcv_benefits.shtml

Flex Fuel
http://www.fueleconomy.gov/feg/flextech.shtml

Why is Fuel Economy Important
http://www.fueleconomy.gov/feg/why.shtml

Motorcycle Vs. Cars for gas mileage
http://www.ehow.com/facts_7271218_motorcycles-vs_-cars-gas-mileage.html