How many miles can plug-in electric vehicles travel before needing to plug-in?

Vehicle range can vary depending on battery capacity, ambient temperature, and driver habits. The Nissan Leaf, for example, is advertised to have a range of 100 miles.  Nissan has conducted extensive research and determined actual mileage will vary between 62 and 138 miles depending on temperature, speed, and the use of heat or air conditioning.

The Wheego EV is estimated at about the same range as the Nissan Leaf; 100 miles.

The Chevrolet Volt will have an anticipated range of 40 miles in all-electric mode.  The Volt will have an additional 330 miles of range when the gas engine kicks in.