My gripe is that the recent mustang has a great look (albeit it still looks boatish) but the rear end is so plain. It further acentuates the boat look making the rear end of the car look tall and plain.
The concept has pretty interesting tail lights, but once again, the bumper is very plain. Its not even vanilla plain, it is just milk with ice. The front end is a pretty cool take. Too much glass in my opinion, but it has a nice ground hugging look.
=/