Climate protection inside a garage

I live in a Maritime Tropical place, which means heat, plenty of humidity with lots of salt added in the air, just enough to make life more fun.
As my garage ( walls, doors) is not insulated ( forgot to do it when I built the garage house, stupid me!) I have been thinking how to make sure the climate does not damage my (to me) new 575.
The Bristol ai had started developing some corrosion issues ( humidity and salt) and on the 993 the interior leather needed periodic attention.

Having read the threads about the Sticky Issue, knowing about Italian style electrics and Electronics, risk for damage to the leather interior and seen the multitude of exposed metal surfaces in the car I have realized that I have to do something.
I had three options:
1: Tear down the garage building, redesign and build new, but for that money I could buy a brace of brand new Ferraris. Or pay for the divorce my wife would surely demand.
2: Insulate the walls and up and over garage ports and add some ducting from the upstairs AC unit. Would possibly have to upgrade the AC as it is dimensioned for the apartment above. Lot of work.
Might work, might not.
Option 3 is to create a separate compartment, insulated, with a portable AC unit inside the garage, but only for one car. I could build one myself from scratch, but as I am too busy/lazy I wanted an easier solution! Plus it would look weird. Like a sex dungeon/prison.
So a little bit of online search and I found out that Carcoon in England make an indoor rigid car cover/ garage, like a capsule. Calked Veloce. They also make an outdoor insulated soft car cover.
I thought - what about a combination?
Keep the rigid frame, but ask them to replace the thin indoir fabric with the insulated outdoor fabric, add 2 holes with adjustable "cuffs" for the AC venting!
So I contacted them and they are happy to do it!

I ordered it with two sets of the adjustable cuffs, one in the front and one beside the entry opening.
As I am unsure of the best position for the AC.
I bought an LG portable AC last time I was in the US.

What do you guys think? OTT? Stupid? Waste of money ?

 

Cost not a problem, same as 15 quality washes and waxes.
Floor is polished and painted. Goid idea with the rubber psrking mats though!
I had some in UK, they followed the contour of the tyre so I did not get flat dpots on the rubber.
The problem insulating the garage is that Styrofoam sheets or expanded cork sheets have to be imported. I did a quick estimate and arrived excluding the AC at sround 10 000 US invluding shipping and local duty.
The modified garage incl AC will be less than 2000 US.

 

I will. It will take a month or two. But I do not know the easiest way to add a picture to a post!
Or any way I should write.

 

Thought about that too, 4 inch of spray on foam, but then I need to fix metal battens to the walls, and cover with Plasterboard, plaster and paint.
This I should have done when I built it. Too complicated to do after.

 

I did some calculation, checked the temperature of the sun expised walls, walks in shade, temperature inside garage and so on, and I arrived at 4 inch spray on foam. The problem was the up-and-over garage doors in Aluminium (2 of them), the badly sealing plastic strip that is supposed to seal the doors and the south facing window ( in sun from morning to afternoon).

If I would achieve the same insulation as the apartement above I would need the same sized AC unit as that, despite no Cathedral ceiling as the floor is not insulated. Would cost me about 200 KYD a month to cool to 79 degrees.
I am placing the order tomorrow for the Modified Carcoon Veloce. If it does not work I will bite the bullet and start insulating.

 

Ordered!

It will be interesting to see how it works. And if it works as I hope!

 

I still would need to insulate.
If the modified Carcoon fors not funtion to satisfaction then I will do it.
I have one of those Samsung units in my sommerhouse in Norway. Except it heats, not cools. Excellent quality.