Orginally posted by: pompous ass
if you notice, there is a cadillac emblem on the engine. Not all V12's are sourced from BMW.
From the article:
When the BMW 750iL sedan was introduced in 1988, it incorporated the first production drive-by-wire engine-management system. The trouble is, BMW won't sell a V-12 engine unless it's surrounded by a car. So when Chevy powertrain engineers sought to evaluate the revolutionary control system, they had to buy the $69,000 German luxury car.