Ge tired of hearing "Are we there yet?" or "How long until we are there?"
Step 1: Here You Go
As we are leaving the house, we hand each child 5 or 10 one dollar bills.
Step 2: Show Me the Money
We tell them each time they ask us one of those two questions (or something just like it), they owe us a dollar.
Step 3: Pick a Prize
Whatever they have left at the end of the trip, they can spend on something special at our destination.