Can't see the video at work... Who is this? I'm guessing Officer Rick Ross since all he talks about is cars. There is another rap song from Nikki Minaj ft. 2 Chainz where he talks about LS450, the car doesn't even exist, nothing new here.
I'm ashamed to know all that. There is really nothing on the radio these days.
From Rap Genius: "this year BMW renamed the BMW M3 coupe to the BMW M4..this is why “this year” he’ll be rolling in an M4."