About 30 years ago, I got a super deal on a 24-foot enclosed car trailer, and had it placed it on my lot. It has stored various cars for years and years at no additional cost (or rent). A
Craigslist "WTB" ad could turn one up.
I never asked, but I think homeowners insurance would cover both trailer and car.
The height of the stored vehicle could be the only restriction. (One of my cars doesn't fit, due to height).