[brucepick]

I really like the idea of the insulated micro garage. Due to lack of portability it really would only help at home, but it could help a lot there.

It definitely deserves its own thread if anyone builds one.

One design challenge it has is where it needs to snug up to the windshield, and hopefully also snug up to the car's belly pan. Probably could use a drawstring in those places, maybe elastic. A bit like the internal cuffs on sleeves of a good winter parka.

Hmmm...
I was thinking it would be a framed structure filled with insulation and a liner.

Instead it could be like one end (half) of a sleeping bag, just cloth and fluff. Stow it in the trunk or back seat when you leave home and pop it on when you arrive at your destination.