3D Super Hang On utilizes gyro controls

If you want to have an arcade-like experience when playing 3D Super Hang On, SEGA recommends that you try out the gyro controls in the 3DS version. The team added these in in order to give the game a real arcade feel, since the arcade version actually had you sitting on a bike/steering to play. Obviously you're on a much smaller screen now, but the motion controls should help immerse you a bit.

Link