This game is beauty, it runs like smoothly, the story mode is fun and surprisingly touching. But above everything, it is a fun game. Ridge Racer is unique and I would love to see a remake with cars and tracks from R4, the Og Ridge Racer and Rage Racer.
The biggest concern I have with R4: Ridge Racer Type 4 is it's level of difficulty. It is not incredibly hard, and as stated earlier, can be picked up by just about anyone... a delight to play, however.
The number of tracks mixed in with the brilliance in design should keep you playing for quite awhile. You may not have the patience to try and unlock all 300 cars, you should find more than enough replay value just trying to learn the different driving techniques for the different cars.
Gran Turismo may have more content, more tracks, more of everything, but this game just has the soul and passion that makes us play games. It is sad to see we don't get games like this anymore. I love this game.