Who knows what this could be? This is definately is not any CSL concept if they were working on weight savings they would start with that big heavy rear exhaust. The wing on the back looks so cheesy! The GT4 that BMW Motorsport team campaigned at the 24 hour Nurburgring race in May had Akrapovic exhaust and no rear wing. Also BMW is so secretive when they test new variants, I think they would have blacked out the emblems. Just my opinion 2010 is around the corner. The U.S would never see a true CSL the D.O.T- standards are to strict, this car would never qualify to meet U.S. safety and crash standards.