If you've never heard that, you aren't a parent, grandparent, aunt, uncle... basically you've never travelled with kids. Bless them, they give the first ten minutes a good effort, but those travel games last all of five minutes and reading in the car can make some people ill (I do know one lucky mother whose children can read away in the car, even the thought of doing that, however makes mine feel rotten!)
You may also have an advantage when travelling with more than one child as they can interact with each other, and even better in the same age range, but what to do on a long journey when you've only one... or two but the small one is happy to spend the time mashing liga into the car seat while the other one does her (or his) best to prolong the inevitable...
"Are we nearly there?"
I once passed a very long train journey without once hearing that question, in fact when we arrived at our destination there was a fleeting look of disappointment. How did I do it?
I simply told her to take photos of things she found interesting from the window and that she could tell us all about them when we reached our destination.

There wasn't a peep... and some of the snaps were quite good too....

Monte Cassino
Taken from the window of the Cassino-Roma Train
by Mary