We have a three way
fridge and a
propane furnace. The
propane is turned off while driving, never had the
fridge start to really thaw things out.
We enjoy the flexibilty of adding
propane to the possibilties, though rarely find it cold enough to need the
furnace. Sure is a good thing to have on those particularly cold occasions though.
I've never actually slept in a bed with an electric blanket so didn't think to add one to our packing list.