It was in Nashville, early in the trip, when we realized we weren't going to make every stop we'd intended. The Ryman Auditorium was on the pretrip list, but somehow we didn't get there when we were downtown the first time, and it was hot and no one was up for a tour the next day. So we drove by and checked it off the list. There it is guys. Check.
In Memphis, Deke had wanted to see the Stax studio. By the time we got into the neighborhood, it was too late in the day, and as we drove by Stax was checked off the list.
This isn't to say we've glossed over things we thought were worth a close look. We weren't like the bus trippers at the Grand Canyon who look over the edge at the south rim visitors center, buy a souvenir and check it off the list. But there are so many things to see that we find ourselves turning to each other and signing a check mark, shorthand for "yep, saw that." Check.