While on the road we play "Yellow Car." Our two young boys watch for specific yellow cars and each car has a different point system. Yellow Jeeps are 2 points, yellow Mini Coopers are 3 points, a yellow Motorcycle is 4 points, all other yellow cars are 1 point. To make things even more interesting, yellow boats are 5 points and a yellow car pulling a boat is 10 points. This game helps keep the little ones busy on long road trips and work on their arithmetic at the same time.