My 41 Studebaker has been on the side of the house underneath one of those $230 Costco garages for a few years now. It doesn't stay warm but it stays dry. The only thing about them as you can't set them up out in the open. I get blown away LOL... last year it got quite a bit of snow on it and I just went inside and poked the ceiling with a broomstick and it just slides right off...
Well, soon we'll have our first sleet, or snow fall. Salt shakers will be on the roads, and car season will be over - till April of next year. If I had a shop/garage, I'd build that junkyard 360 over the winter.