Your point is not well taken nor understood. THAT Charger was made entirely by Chrysler, whereas the production model was co-produced with MB. Besides, look at the 300. Almost identical to ITS concept car. Same goes for VIPER, THE K-CARS, CROSSFIRE, PACIFICA, PT CRUISER, PROWLER, NEON.... the list goes on and on and on and on....
Oh and let's not forget this one...
The Camaro may not look exactly like that, but it will exist, and with (I guarantee it) a top-model containing a 427 in its bowels. I think Mustang is screwed, style-wise, but it is cheaper. I guess you get what you pay for.