These days, my son has a variety of gadgets to occupy a 6 hour road trip or a 12 hour plane flight. So it has not been as traumatizing as I remember when I was on trips with my family.
On a recent short haul trip we decided to teach my son how to get a trucker to blow his horn. One of the few smile inducing actions you can receive from a total stranger while travelling at 65 mile per hour.
While buckled in his car seat and barely his head peeking out of the window he learned, quite efficiently, the fist pump. To his joy (and his parents) he was able to get about 4 out of 4 trucks to blow their horns.
The joys of childhood and fatherhood.