Traveling on I-80 you will eventually run into the WORLD'S LARGEST TRUCK STOP. I am thrilled to admit, I have now been here about 7 times. It's an amazing thing and one of those little gems I look forward to visiting. I enjoy looking at all the little trinket's you can find from "Jesus" t-shirts to Buffing kits for your rig. You can also visit the Trucker Museum, get your teeth cleaned or catch a film, all from the comfort of a truck stop.
If you are even on I-80 traveling through Iowa, I highly recommend you make a pitstop.