I played a good bit of this awhile back, and I really regret it. It was part of Burger King's trio of titles they included in value meals. It was an innovative promotion, I wish the games were like that.
PocketBike Racer is obviously the racer of the group. Featuring tons of characters, a few tracks, and most importantly awkward driving. Mario Kart it is not.
And driving as a Whopper or Brooke Burke is not fun. End of story.