I forgot to add another one, this is more for the not so little people, and I got it in an email...It's called, Car Cricket.

each person takes a turn batting. to score you add up the value of of the cars passing in the opposite direction.

Cars = 1 run
Car with trailer = 2 runs
Bus or Truck = 4 runs
Semi-Trailer = 6 runs.

The batter keeps scoring until they pass a red car. Then they are out and it's the next batter's turn.
First to 100 wins

Nic