I have this one:
The Car Capsule car storage bubble is as EASY as 1, 2, 3 to use! You won't believe it! And that's just an added bonus when you see how well your vehicle is locked away from evil elements like corrosion,
rust, dust, dirt, dings and even finger prints. The indoor inflatable car storage cover is a...
www.calcarcover.com
It works great, in my limited experience. My “limited experience” refers to the fact that I bought one, set it up (setup was easy, by the way), and it all worked great; but I quickly realized that it wasn’t going to practical for my garage in the long term. I measured everything beforehand, so it fit the car and fit in my garage; but we need to park two cars in my garage over the winter and there wasn’t enough room for that with the bubble inflated. So, I disassembled it and was going to return it, but getting it back in the original packaging wasn’t feasible. (Once you’ve inflated and de-inflated it, getting it to fold back down small enough to go back in the original box seemed near-impossible, at least for one person).