TeamXbox writes:
"Sidhe Interactive, industry leading developer of cross-platform titles, today announced the immediate availability of the Turbo Expansion Pack for GripShift(R) on Xbox LIVE(R) Arcade, the premier destination for digitally distributed, high-definition original and classic games. GripShift fans will enjoy tons of bonus content including all-new single-player and multiplayer modes, eight new Race Tracks, eight new Deathmatch Arenas, and eighteen brand new music tracks."
