Driving Controls
    WASD / arrow keys = drive
    Enter / R = restart
    Editor Controls
    Right-click + drag = pan the camera
    Middle mouse-click + drag = rotate the camera
    Mouse-scroll = zoom in/out
    Shift + mouse-scroll / ZC = adjust height up/down
    QE = rotate the camera left/right
    R / Space = rotate the selected item
    X = remove an item
    T = initiate test drive
    Left-click = place an item