Hey Hiker,
At the east end of Iowa - just west of Davenport - Exit 284?- Is the I-80 truck stop. If you have not been there, make the plan to do it. The truck stop is interesting and the restaurant is pretty good, bu then go across the drive to the truck Museum. They ask for a donation. The first time we were there, I put some small amount into the jar, but after we got through, I added a bunch more....
Oh, if there is a truck thing you ever wanted, they have it in the store there. Just touring the store can kill an afternoon.
Matt