No, we can't answer for you what BMW is thinking when it introduces vehicles like this that defy classification. The X6 did it and now the Concept 5 Series Gran Turismo will do it again at the Geneva Motor Show next month. Dubbed the Progressive Activity Sedan during its development, the Concept 5 Series GT is part sedan and wagon, part luxury car and crossover, part BMW and an answer to a question no one asked. Answering unasked questions is BMW's thing these days, so perhaps these design sketches will shed light on what the Concept 5 Series GT is actually supposed to be. We've analyzed each one carefully, and we're still not sure what purpose such a big vehicle that only seats four people could serve. Needless to say, those four people will probably enjoy their time in BMW's latest segment-bending model. Click on over to carbodydesign to read their much more expert opinion of the vehicle's design. Judging by their lengthy analysis, there actually was some thought put into it.