At some point natural gas is going to be used in fleet vehicles and it is already being used to produce electricity. In Alabama 1/3 of the gas sold in the summertime is used to make electricity. Summer is high air condition use. Rest of the year is coal, nuclear, and hydro in that order. 90% of the electricity produced in Texas is from natural gas. Texas has a lot of wind in west Texas, but most of the people live in east Texas. That is why T. Boone Pickens is trying to get his windmill farms up and running in west Texas, but is having a hard time getting the power companies to build the transmission lines back to east Texas. He had build 80-90 natural gas filling stations for vehicles. Makes sense to use wind for power and natural gas for vehicles to stop imports. The only drawback to natural gas is range, 100-150 miles. However, you can fill up in 15 minutes from a compressor station.