It’s been a dispiriting sales season so far for those who hoped that electric cars like the GM Volt and Nissan’s Leaf would transform the auto industry. In fact, the two vehicles have had crushingly disappointing sales figures so far. The Volt sold only 281 units and the Nissan just 67 units in February. What’s the problem? Freelance writer Mark Whittington says Consumer Reports suggests reasons. The Volt sells for a price in the mid $40,000s but it does not get very good mileage compared to conventional competitors like the hybrids Toyota Prius and the Ford Fusion. The mileage deteriorates during cold weather because the car’s heater runs on the electric battery. Consumer Reports found similar problems with the Nissan Leaf, though it costs about $10,000 less than the Volt. Recharging may also be an issue. The inconvenience of having to leave the vehicle for five hours as it recharges may be a powerful disincentive.