To make a decent game you need to have at least some decent gameplay. Unfortunately Namco have failed to realise this.
Producing a game with horrible control systems, repulsive twitchy steering and on-rails skidding it makes you wonder how many minutes the developers must have spent making this game. As well as these problems there is the inconsistent difficulty levels, tedious races, bad sense of speed, lack of tracks, one of the most unfair collision detection systems I have ever seen and mediocre graphics. All this equals an almost unplayable mess where the best part of the game boils down to looking at the 25 cars on offer.
Stay aware, steer clear of this tripe and get Mario Kart, if you want Ridge Racer just go and buy a PSP instead.