My friends gregh and his fiancee Amy are moving from Austin to New Zealand. The first leg of their move consisted of a tour of the US west in gregh's Honda Insight (upgraded with cruise control).
They stopped every 60 miles to take a picture, and to get some stretching in, I imagine.
http://hewgill.com/photo/trips/usa-s...0mi/index.html
gregh made this nifty Google Maps-based tracklog of the journey, too:
http://hewgill.com/travel/usa-southwest/