All the tracks have realistic elevations, but someone accidentally reversed/flattened them when they put them in game. Also the trees are mutantly huge, FFB is laughable, its near impossible to slide and your fps will be drained.
Buy GTR1 or 2/GT Legends, they are miles better than the repetetive crud Simbin churn out now.
It's not that bad at all and certainly worth a fiver. The AI is good to race against for a start, and you can drive an E30 M3 . Graphics good, physics ok for the non hardcore.