Just finished talking for quite a while to a couple who traveled to Alaska in their motorhome. They were gone for 4 months! Totally jealous, until they told me what they spent in Rental Car fees in towns where the wanted to stay awhile, and really didn't want to unhook the motorhome to explore.
Their plans were to start looking (and trading for) a car that's towable 4 wheels down. No need for additional trailer (and tags, tires, etc) or even a tow-dolly.
Took a bit of navigating, but finally found the .pdf file on the Motorhome Magazine webpage. YEE HAW, Subaru's are available to tow 4 down! But only in manual trans. That's ok, really wanted automatic, but at least I can now purchase a small 4-wheel drive vehicle to tow behind my Airstream, and have a 4-wheel drive car for my move to Alaska in a bit over 4 years!
For those who want the URL, here you go. Thanks, Derek
http://webcontent.goodsam.com/2014DinghyGuide.pdf