DRIVING WITH WINDOWS OPEN?

I doubt you would have any fridge issues, if you turned it off while traveling. I have had mine off when traveling, and according to my thermometers everything stayed cold or frozen. My only issue was remembering to turn the fridge back on when camped. I will not run my fridge on 12-volts, been there and done that.

I provided a link to several of those "big curved covers ".