BMW M550 d X drive

This car is going to be beast. BMW explains the tri turbo diesel engine that powers it here.

Cadillac ATS-V ?

It seems like GM is working on some twin turbo V6's, could the Cadillac ATS-V be powered by one of these?

Cadillac XTS-V (not)

It appears that Cadillac will NOT be releasing a XTS-V at this point of time which is a shame.

Cadillac has the CTS-V available with 556hp and previously had the STS-V which is a fun car with 469hp.

The ATS which has just been released may get a V edition, but time will tell.