On your last traveling vacation, did you help your children search for that license plate from Montana? Maybe you're young enough to remember searching for it with your parents? Why don't you and your family search for 18 wheelers instead? There are 160 trucks with a list of the number they have. Keep track of the trucks you spot and see who gets the most points. Daddy and Johnny can compete against Mommy and Susy to see who can spot the greatest number. It's fun and challenging.