I always seem to come across these "werkstestwagons" aka prototypes. Here is another one. This looks to be MINI's new XXXL American model...
No... actually this is BMW's internal employee shuttle to ferry workers around from the many different departments near the FIZ(R&D) center. The FIZ has over 5K employee's and many take the U-Bahn(Subway) system to work. This is BMW having a sense of humor and I LIKE IT!