Win a private screening of Disney Pixar's Cars 3 for you and 50 friends Sky

BE IN TO WIN A PRIVATE SCREENING OF DISNEY PIXAR’S CARS 3,
STARRING OWEN WILSON AND ARMIE HAMMER FOR YOU AND 50 FRIENDS
AT YOUR NEAREST CINEMA ANYWHERE IN NEW ZEALAND!
Plus we have 5 runner up prize packs of a kids t-shirt, sticker sheets, notebook, travel bag, and a double in-season pass to the film.
Just answer the following question correctly and be in to win:
What number is on the side of Lightning McQueen?