Wally Byam, founded Airstream in 1935, and apparently went traveling with one after WW2

a photo gallery of the Airstream convoy across Europe at http://www.overdrive.fi/forum/threads/vanhoja-valokuvia-ameriikan-raitilta.267070/page-292#post-3066725
http://www.overdrive.fi/forum/threads/vanhoja-valokuvia-ameriikan-raitilta.267070/page-124#post-3013002