Through July 14th, head on over to the Walmart Facebook page,
“like” them, then click on the “Mater’s Secret Mission” tab. Now click on the
“Get Started” button (you will have to allow the app), select a secret agent
(one of your Facebook friends) to receive your message, and you may win Cars 2 Movie Ticket vouchers!

Keep in mind that a limited number of the movie ticket vouchers are released hourly.