If you look at the ref images in that last render, you can see that he's basing everything off the Celica (mainly because he's in love with Celica's). As far as the rear of the car, I dont see any 'design' issues. The door issue, I understand. You need an actual frame of the car, if not....its no good. Also, what does the "Hybrid" post have to do with anything? And dual exhaust....I see no problem with that. Maybe the engine is a V6 or a V8. I know your not bashing his model, but still...some of the points you brought up, arent really an issue. Its all design. Hence "concept". :nod: