Yeah I read that one first. It says it's okay to keep in the garage as long as it isn't over 90 degrees (my garage doesn't face the sun so it's never "direct" heat). But then Chris says 80 degrees. As an addict, my collection will take up a decent amount of space inside.
I've been wanting to invest in garage door insulation for a while just for general energy savings. I think this might be a good time to look into it again.