As I recall, I-70 is pretty impressive and takes you by Arches National Park in Utah. (Checks Google.) Yup, memory still serves.

We were in Green River ahead of the last L.A. Worldcon when I posted this on free Wi-Fi from the hatch of our minivan full of CDs when we stopped to buy gas. I'd scrawled it on the back of a hotel receipt when I couldn't sleep earlier that morning in Grand Junction. :)