Sonic & Sega All-Stars Racing

Sonic and Sega All Stars Racing is a recently announced racing game that features characters from the Sonic and SEGA franchise. It is for the Xbox 360, PS3, PS2, Wii, and PC. It is currently the third installment in the SEGA Superstars series and is being developed by Sumo Digital

Gameplay
Gameplay will consist of characters driving vehicles that relate to the character. Courses that appear in the game are slated to be references to various Sonic and SEGA titles

Characters
Although much is unknown about the characters, the trailer and press releases have revealed some characters.