So back in '04 sometime after heroes was created sega decided to make a 3D endless runner sonic game for the DS systems but it was cancelled for unknown reasons, there hasn't been much info on the game besides what was just said really, but it took place in seaside hill(the same as sonic dash) and it was going to have boosting and such, but were this to have been fully release, it would've became the first sonic game for the NDS and perhaps the first 3D sonic game overall for a handheld system, but instead sonic rush took that the spot for becoming the first ds sonic game.
So DISCUSS!
Link:http://info.sonicretro.org/Sonic_DS

I never new the DS could handle that 3D model it looks like a lower quality heroes model.
Also if you guys notice the goal theme is sonic advances start screen theme.