All levels unlocked.
Parking cars is not that hard anymore, so why not try something harder? How about an airplane? During war, F22 planes are transported on ships. Try to park the plane using your arrow keys to move and the space bar to brake. You also have the option to play with your mouse if you want, you just need to drag the airplane in the direction you want.
Do not hit other planes or people! There will be pedestrians on the ship who have work to do. Hitting them causes you to lose the level. Crashing your plane into anything damages it. In the bottom left part of the screen you will see your health bar. It will decrease with every damage and you will not be able to finish the level if you run out of it. Next to it you will also see the time in which you have to complete the parking operation.