Sarcastic replies aside, I will say this. The serendipity that can happen when you're driving through America and not on an insane schedule can be quite amazing. Every single city, small, medium, or large, has something cool in or near it. Every single one. If you're open to finding them, or letting them find you, you're gonna have a blast.
Stop for lunch at a small town diner, and ask the waitress or hostess 'what's cool about this city?' (or something like that). Go to the main library and ask the same. Use the tried and true "fun things to do in XYZ" google search.
One quick story. The family was on a roadtrip in the northeast last year. We had a day to kill driving between DC and NYC (eventually headed to Cape Cod). I did the google search thing, and found out that one of the Forts in Baltimore is a National Park. Now, National Parks are common, and Forts are common, but the overlapping of the two isn't necessarily common. So we set a course for Fort McHenry to kill the day. As my wife drove, I read more, and starting seeing a BUNCH of references to the Star Spangled Banner. When we got there we discovered that Fort McHenry is THAT Fort. Rockets red glare, bombs bursting in air, gave proof through the night, that our flag was still there? Yeah, the flag flew over THAT Fort. Maybe some of y'all knew that already, but we didn't. And it turned into one of the absolute highlights of all of our travels. Quick edit to add - my US History learnings did not sufficiently educate me on how fucking close we were to losing our country during the War of 1812. Had the British succeeded at Baltimore / Fort McHenry, consensus (at least from the exhibits at the museum) was that they'd sail up the river to DC, which had just been attacked itself (or was just about to be), and likely take back the seat of our fledgling country.
Just be open, man. This country has awesome shit all over the place.