If you take HamRad's suggestion, next on the trip, excellent timing weather wise (or was in 2011), after the Rally:
Grand Canyon
Monument Valley
Moab (Arches and Canyonland and MORE)
Bryce (can get Zion from there via truck day trip) and Capital Reef and Grande Escalante. Don't miss Capital Reef!
We then spent month in Salt Lake City (genealogy research mecca)
Yellowstone
Custer South Dakota
Depending on weather, then hit Glacier, etc. We ran outta time and Glacier still had 90 foot drifts, so we headed east and home to the stick built, it was time for grandtwin time!
Lots of photos of this on my blog (see sig line), I am still writing about it, I am in Custer now on the blog!
By the way, there is a little search box on the blog, right hand column.
Enjoy! Don't rush!