Yep, that's the downloadable game on PSN.

You get the norma time trial mode, in which you drive along the track trying to beat the computer time. Each time you beat, you unlock the next car - 10 to unlock altogether, I think it is.

Once you've completed that and unlocked the Fezza, then you unlock drift mode, and are able to drive along reversed versions of the track.

You can also tune each car to a certain extent when you unlock it.