We plan on driving in a modified circle from Los Angeles through:

San Diego
Las Vegas
Salt Lake City
Yellowstone NP
Helena
Spokane
Victoria BC
Olympia
Salem
Eureka
Carson City
Yosemite
Los Angeles

We can also start in Seattle if that is a better option.

Start in late May - finish in early July, 2011.

Any advice on useful sites, great places to stay or view would be most welcome. We are retired Australians, and will be collecting a rental car in either Seattle or Los Angeles.