This afternoon a demo for Sonic and SEGA Allstars racing went up on xbox live! The demo includes several tracks and allows you to play as Sonic or Banjo. Be warned though the demo is a whooping 1.03GB so it may take a while to get the whole thing unless your sitting on top of a telephone exchange.

To top it off there is also a theme for Allstars racing available, see the lovely blue sky picture below as an example.

Original story: Sonic City Blognik