I received this message from the people who won the title Coolest Campers on the Planet 2009. They wrote:
Camping in winterland. These pictures are from our trip to Sjusjøen last Weekend.You can see how nice it can be. Inside we have a nice temperature and outside it is about minus twenty.Our caravan is equiped with central heating. The floor is heated with circulating hot water. In the front we have built a permanent little room as a fortent where we have a little electric heated oven. Try it and I believe you like it!