Eggman, Tails, AiAi, Amigo and many more will join Sonic in their custom built vehicles, revving their engines and jostling to stay ahead of the pack. In a frantic battle to the chequered flag, Sonic and friends speed around tracks set in mediaeval castle ramparts, lush rainforests and bustling cities, all taken from the visually rich and varied universes of Sonic and SEGA.