Whats the car line-up in that GTPSP commercial?

[NickGuy]

you know the one with rheys and tanner foust at laguna seca....i see the corvette ZR1, the ford gt, and the nissan GT-R r35, but i cant tell the 4th car...i wanted to set this race up in game, can anyone discern the 4th car?

http://www.youtube.com/watch?v=BhcLbW-YomU

http://www.youtube.com/watch?v=-xqlB0QG3OY

 

[Northstar]

I think it's a BMW M5