The new city/cars are fun but not fun enough to seperate it from an exact copy.
Most all variety of car is represented here (except for the staple tuner street car, the Honda Civic?) from the Escalade EXT, to concept cars like the Millenium Edition. Choppers from the OCC, crotch rockets straight off the Ducati assembly line, the most classic of "Old School American Muscle" and luxury rollers from Lexus, BMW, and Mercedes Benz. Over 40 cars in all with anywhere from 6 - 20 car specific customizable "uniforms" to make your ride look as mind blowingly pimped or stomach wrentching haggerd as you want.
The music is somewhat predictable for any new age racing game. R&B and hip hop round out the bulk of the soundtrack along with some house trance and metal to give it an overall nice feel for the music and beats involved with blazing 200 mph down highways weaving between buses and cars.
The new city of Tokyo is very well placed with areas very reminiscent of the Midnight Club 2 courses with elevated subways and wall driving along the river. The only complaint is not a complaint but an observation. The AI involved with Tokyo is very dumbed down from the 3 other cities. The first few dozen races can be won without knowing anything about where the shortcuts and jumps even are placed. It seems that it was added merely for enjoyment and another place to earn money instead of a full extra racing city.
This game is merely an expansion on the non remixed DUB edition. The added feature of a new city is enticing but not enticing enough to trade in your original for a dozen new cars and a new course. Rent it, see how you like it, and if it's for you, go for it.