Though it initially has some sleek lines, viewed as a whole, the Chinese concept car is kind of stubby.
If the Aston is a car, hopefully it is Sideswipe. He'd still be a silver car, so that'd help with continuity.
And since he's a white recolor of Bumblebee, wouldn't it make sense that Bugbite would be a white version of Bumblebee? Although I know that's just wishful thinking, because Bugbite is a Decepticon, he's a somewhat obscure character, and except for Optimus and Bumblebee, no Transformer in the live action series looks even vaguely like their G1 counterpart. Plus Bay is directing, so although I'll probably enjoy the movie, I doubt ANY of the plot or characterization is going to be taken from the Transformer mythos that closely.