BMW has big plans for its "i" car lineup. It's already showcased both the i3 electric city car and i8 electric sportscar concepts, but now reports indicate that it will unveil an i4 concept at the Los Angeles Auto Show later this month. The third car in the sub-brand's range will be unveiled before the first two have even reached showrooms. Citing French publication L'Automobile
, Autoblog Green says that an i4 concept will likely be a sportier version of the four-door i3 with a sticker price above $50,000.