I don't use it much in my truck at all, it's a supercab and with all 4 windows down it's comfy. I mind the heat a lot less than the cold. Coincidentally, this is the second time in the past 24 hours this topic has come up. A family member has an '89 Saab. No idea what model, I've never seen it. It sits in a garage 99% of the time and has the nerve to not work perfectly when totally ignored for long periods of time. Personally, I'd take it down to the Hudson River and see if it floats.