Cross Country Roadtrip?

I really want to drive my car back to Oregon after I graduate. Can anyone say Cross Country Roadtrip? I'm starting to create a list of things I want to see. But I would really like to hear other people's suggestions. So share away!

The List Thus Far:
* Grand Canyon National Park - Arizona
* Las Vegas to see some Cirque Du Soleil shows and learn how to gamble (not a ton though)
* Topeka, Kansas - check out Dad's motorcycle that is getting redone
* Sturgis
* Mt. Rushmore
* Badlands
* Yellowstone
* Grand Tetons