Do you like the 2-Series coupe, but wished it came in a sedan? Well according to Autocar, BMW is planning to build one.   Why? The next-generation BMW 3-Series is expected to grow size and the German automaker believes there is space for another sedan (or should we say a four-door coupe). At the moment, BMW is debating whether the 2-Series Gran Coupe should follow in the footsteps of the 4 and 6-Series Gran Coupe (sedan-ish) or go with five-door liftback. Whatever design is chosen, expect the