I'll be honest - I may not be the biggest graphics whore, as I can play old PS1 and before that without any problem even after playing eye candy-type games like Crysis, Uncharted 2, but seeing 2D trees similar to Midtown Madness quality (ok, not that low, but you get the point), while at the same time seeing well crafted cars (which are some of the most finely detailed I've ever seen in a game) in a replay...it kind of upsets the balance for me, you know? They could at least use some more convenient visual trick than that, so as to avert such nitpicking.
Well, I'm not saying I don't want good detail - just that I don't want to see other stuff sacrificed to get it. On driving games I never really notice that stuff. It's just a background blur as I'm focused on the track and the other cars. Or it's a blur because I've spun off again.
Now, if I was wandering around an FPS or TPS and saw trees like that it'd be another story of course.
Try to be reasonable... its easier than you think...