Scott,
OK, Left Coast to start.
How long are the wife and kids likely to be here with you?
Theme Parks: Disneyland, Universal Studios, SeaWorld are the top 3 that come to mind. Those 3 should fill up at least a week. LOL
Then there is the Redwood forest, Yosemite National Park, and on the way the Hoover Dam (pretty impressive being built in the 1930's).
THat's just the top ones off the top of my head.
You also got a lot of forum members out west as well. I would think that one of them could find something for you that you could buy and drive.
Charlie