I saw a garage/shop in Alaska that used sea containers for two walls. I'm now considering building something similar. My thought is to put two 40-foot containers on the edges of a 40x40 foot concrete pad. I'm also considering putting the containers on the ground and pouring the pad only in between them. That would provide and insane amount of storage and I could add a roof and enclose it front and back. Has anyone here done this? Pros and cons?