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The game is pretty realistic, although there are a few minor unrealistic parts to it. The turbo button is one of them. To use the turbo button, the meter at the bottom of your screen must be full. To use the turbo, perform a wheelie and hold down the accelerator. The problem with this is that if you let drop the wheelie before the meter is fully drained, you don't get to use what is remaining in the meter. You have to wait until it fully recharges again. Also, when you make sharp turns, it seems as if you're moving sideways and the road is still going straight. This makes for some rather nasty accidents, as it looks like you're off-course when you're really not.