Human
You. The Road. Nothing else.
BMW might as well use the V12 in the 6er GC, since they have no 'halo' car (1) and already produce the engine for the F02 + Rolls-Royce (2). 
The 6er GC is the nearest we BMW fans are going to come to experience a 'halo' car from our beloved BMW and it's going to be expensive at that - V12 could only enhance the exclusiveness whilst at the same time it can compete with the Bentley Continental GT
PS: Oh and please do not f-up this thread by mentioning the i8 - it's NOT a halo car.
The 6er GC is the nearest we BMW fans are going to come to experience a 'halo' car from our beloved BMW and it's going to be expensive at that - V12 could only enhance the exclusiveness whilst at the same time it can compete with the Bentley Continental GT
PS: Oh and please do not f-up this thread by mentioning the i8 - it's NOT a halo car.
