Basic dog questions in an Airstream

[ovrteakettle]

I'm new, just bought an Airstream 1975 29' Ambassador today. I'm planning to live in it for the summer (and maybe more, who knows? the recession caused some budget cuts at work!). I have two dogs, a blind doxie mix and a 70lb pit maybe boxer mix. I know nothing about Airstreams beyond the fact I've always likes them! Right now, I'm going to park it in a friend's barn, so I know that it will be in the shade, but in the future I may want to move it closer to town (to the farm where my horses are) and then it won't be covered.

Does the Airstream stay cool enough that the dogs can hang out there while I'm gone during the day?

I suspect that I'll have lots more questions in the near future -- I'm hitching up my truck tomorrow and hauling for the first time.