There's very little to fault Undercover on. It's got everything you could want in a street racing game. Your driving game pros will probably still zip through it without too many difficulties - in the first half of the game in particular it's easy to win most races first time.
But there's money to win, cars to unlock and race times to beat for added replayability. It might not contain too many surprises but it's got gallons of speed and style.