UPDATE:
Please see M5 / M6 Oil Pump Recall FAQ and Affected VIN List
Just received a call from my dealer advising me that BMW has issued a bulletin stating there is a issue with the engine in the M5's & M6's. Something to do with sudden loss of oil pressure? Told NOT to drive the car they will be flatbedding it back to the dealership! You may want to call your dealer and see if you VIN is on the last of effected M5's/M6's...
Here is the bulletin: