My top tip from my European Trip this summer would be to take a bottle of spray on Febreze with you (not sure if you have this stuff in the US).

Great for those moments when you have already worn every pair of pants inside out, and the town you are in is somewhat backwards and doesn't have a self service Laundy

Enjoy your trip, I'm thinking of doing a coast to coast trip in the Smart next year, let us know how you are gettin on.

Cheers

Cris.

Edit - Pants is the UK meaning, ie underwear