A lack of information
As of early 2015, U.S. auto consumers didn’t know a great deal about electric cars. Only 48% could name a specific make and model (e.g., Tesla Model S, Nissan Leaf). Another 56% said they needed cars with 300 miles of range to consider them. Considering gen-one Chevy Volt drivers covered 80% of their driving on electric power in a car with 38 miles of EV range, there is a serious information deficit here.