A Vulcan?
Well, judging by this picture, A Buick.
However, what Fox have found is a brilliantly amusing ad where he drives a Mercedes CLS.
But it's not a Mercedes ad, it's an Audi ad...
Lots of Star Trek references in there but no mention of Star Trek itself. Possibly because the Mazda 6 is the official advertising partner of "Star Trek: Into Darkness" so they wouldn't want to upset the sponsors.
I can't vouch for the film because I haven't watched it - yet. But I can certainly vouch for this advert.
Missing it would be very illogical.