freetrackOnce LookPilot is running, launch the game. Head tracking support may vary by version - check the game's Settings → Controls for TrackIR options, or you may need to edit the game.ini file in Documents\Forward Development\City Car Driving\config and set EnableTrackIr=true.
Shaky or twitchy tracking is the most-reported issue across all games, and it almost always traces to the camera picture, not the game:
Press Alt+C (default) to recenter tracking on your current head position at any time - do it once seated in your normal driving position, looking at the center of your screen. If you find yourself recentering constantly, move the webcam so it faces you head-on (an off-axis camera makes turned positions read as drift) and recenter while looking at the horizon in-game, not at the camera.
Which City Car Driving versions support head tracking? Support varies by version. Newer versions expose TrackIR options under Settings -> Controls; older ones need the EnableTrackIr=true line in game.ini (path above). If neither exists in your version, head tracking is not available in that build.
Why use head tracking in a driving school simulator? Mirror checks and junction scanning - the exact habits the simulator teaches - become natural head movements instead of button presses, which is closer to real driving practice.
Do I need any hardware besides a webcam? No. City Car Driving listens for the TrackIR protocol and LookPilot provides it from a standard webcam - no clips or IR devices.