If you are going to drive from Ottawa to Halifax in one day, you might want to play Manon's cow counting game while you are going through New Brunswick. Here is how it works:
Count Cows: When you see cows on your side of the car, count them. If there are too many for you to count, you can go "three, six, twelve, thirty." (I questioned the accuracy of this method, but was told it is valid to count a certain number and then determine that there are more twice that many.)
When you pass more cows on your side, add them to your total.
Whoever has the higher count is winning, but...
Cemetery: If you pass a graveyard on your side of the car, you may "bury" as many of the other person's cows as the graveyard has headstones (again estimates are allowed); and
Water: If you pass a body of water on your side of the car, you may "drown" as many of the other person's cows as the body of water could reasonably absorb.
If you snooze, you lose: You are under no obligation to alert your opponent to cows, graves or bodies of water on their side of the car.
You may gain additional style points by pointing out features of the landscape on your side to your opponent, for example:
While passing a lumber yard: "Hey, Manon, do you see what they've got there? It's wood to build the coffins I'll be burying your cows in!"
While passing a bulldozer and excavator clearing brush: "Hey Manon, do you know what they're doing over there? Digging the graves for your cows!"