GREEN SCAM!
Looks like nat gas is going to become a huge player in US transportation fuels. Sasol of S. Africa is going to spend $10 bil on a nat gas to diesel conversion plant in Louisana.
http://www.energyandcapital.com/articles/10-billion-sasol-plant-to-be-built-in-us/1768
So the electric scenario built on massively increasing prices for gasoline and diesel may not work out.