The PO of our Argosy told me that they would load up the fridge, turn on the propane and drive on down the road to their camp spot. Hmmm, not sure if that is a good idea or not.
I like the idea of having a loaded fridge vs a loaded cooler but driving with propane on seems a bit Darwinish.
Since our current trip had us going through tunnels, I decided to do a quick web search for info. Instead of re-writing the excellent tips on the web, here is a link to a great article about driving with propane: