I have a question for people familiar with Utah....

It appears that the route from Scottsdale Arizona (Phoenix) to The CCR in Wyoming according to the Nav unit is mostly freeway. So, what attractions or side line adventures do any of you suggest for the trip there. It appears that from my location "Provo" Utah is in the center of the trip. It would be nice to get half way there and rest for the night,but Salt Lake City is just up the road aways. I have a couple days to spare.

What would you do....?

Any suggestions would be appreciated