Plug-in hybrid
Fueling a car with electricity is about 5 times cheaper than fueling it with gasoline. That is equivalent to buying gasoline at less than $1 per gallon. It also reduces greenhouse pollution and helps reduce crude oil imports. Also plug-in hybrids produced substantially lower greenhouse gas emissions than either conventional gasoline cars or unplugged hybrids. The reduction in emissions results from electric operation being much more efficient than gasoline operation.