How do I unlock the tracks and characters in cars xbox360?

You have to play story mode and collect the points, and afterward go and buy the characters. Fun game by the way. I got it for my son, and ended up playing it.

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AriesGOD

http://www.blu-ray.com/community/gallery.php?member=landry_p2000&folderid=86

I have unlocked all of the games except the last 3.  The last game I have played is Radiator Springs GP and we have lost track of the story.  Where do I go next to finish the game???   I have looked in all of the games but I am missing something.  Chic challenged lightning to a three race challenge.  We won Radiator Springs GP but now we are lost. Help!