What's wrong with Ridge Racer? Look, if GT had Ridge Racer tracks with GT physics it would be a totally different game. If GT had its own tracks with RR physics, it would be a fourth kind of game. The point is tracks on their own cannot be realistic or not, it's how the interactions with that track play out that matters. In the case of the Rollcage games, the reasons why the cars can do what they do is "explained" so that the physics make sense, and it is therefore "realistic" in the framework of that "narrative".
GT5 aims to be a vehicle dynamics simulator, who cares if they add stunt tracks as long as cars behave properly on those circuits? (Who wouldn't want to test out that F1 car upside down theory? Or, was it a BMW Mercedes advert where they drove on the ceiling of a tunnel?) Just a bit of light relief, you know, because it's a game.
EDIT: Simon, for the last time saying Cape Ring is unrealistic is either stating the obvious (it doesn't exist) or is actually making an assertion. You are entitled to state an opinion, yes, but that is not what you are doing here.
EDIT: Anyway, we've since established that what you mean is that Cape Ring is implausible as circuit to be used in top-flight racing, i.e. a Simbin game. Which is by no means the same thing as "unrealistic" - not opinion, no subjectivity, distinctly different by definition.
