Sonic & SEGA All-Stars Racing

You can do this with a second controller.

- Start a split screen / multiplayer race with 2 players
- On the track selection screen press y (settings)
- Set difficulty to: off (so no cpu players are present)
- Set rounds to: 1
- Drive a round and cross the finish in reverse and get the achievement!!!

(player 2 does not have to move 1 inch and gets a "Project Rub" achievement for free)

Another way of doing this with a single controller is to start up a single race on beginner difficulty, 9 laps (or however many you think you need to get a substantial lead) and pick a track you're comfortable with, preferably one with a wide finish line like Icicle Valley.

Just release the gas before the finish line, steer slightly to the side and use the drift button to reverse and there you go. Make sure you don't hit the wall or you'll bounce back. Also watch out with boosts.

For those without two controllers: I got this by doing a 3 lap race and hanging back to get all star and then catching up normally and using it half way round the last lap while in the lead. once the end comes up on the screen be aware and brake slowly to avoid drifting and flip it round and reverse over the line, for some reason i found it easier to reverse with a bike so i used Shadow.