On road trips, consider a scavenger hunt.
Before departure, the adults on the trip are charged with learning about interesting things online that we may see on our way. We give each person a list of things to look for and try to take a picture or draw a picture of what that item is when we see it.
Prizes are awarded at each pit stop and are usually a postcard or key-chain from that stop. It’s fun to see who collects the most “trophies” from each trip.