BEVx

The 2014 BMW i3 electric car, which we drove last week, is generating intense interest among both plug-in proponents and BMW fans. Among other things, it's the first car in the world offered with an optional range-extending engine, at an increased cost of $3,850. MORE: 2014 BMW i3: First Drive Of BMW's Radical New Electric Car But versions of the BMW i3 that are fitted with the range extender have been very specifically designed to meet California regulations on what it deems the "auxiliary power unit." The APU, which maintains battery charge at about 30 percent after the pack has been...