I made some back-of-the-napkin calculations, and based on the electric range and outside charging prices it didn't seem like electric cars are really that much cheaper. The only time they clearly come out on top is when you can charge them at home at off peak hours, at least around here. PHEVs are in an even worse situation because even though they have a small battery, they need to be charged for quite some time, so outside charging is kind of off the table.