There is nothing missing from this title at all. Perfect sound, Perfect looks, perfect tracks...etc.
Well, I guess I shouldn't say PERFECT. I found a few flaws, such as the monotonous 10 and 100 lap races. Although this does add to the reality factor, It does take away from the fun. Also, a few of the songs on the soundtrack weren't all that great. I liked most, don't get me wrong, but the Daiki Kaisho songs, for one, weren't all the good.
That said, I would like to point out the fact taht those were the ONLY flaws I could find. Everyting else was pure magic. The smoothness as you glide along the track, the dirt your carr collects race after race, the many car brands and choices, the licenses, and even the wheel customizations make this a GREAT game. I can find no game out there right now that could surpass it.
Overall: Strong game; sets a new standard for the racing genre. 99/100