I was up all night building this thing and it came out better than any of my other trailer ideas. I was introduced to a new product I could use in place of super glue; and it's even stronger. It's call 'Sticky Putty'. This came out as a very neat homemade addition; the looks of intermodal right from the ship channel.
The crates are just made of cardboard, so they aren't that great of a sight. The ISO tanks 'AFC Industries LLC' and 'Universal Compression' are made of cans; they were just the right scale. :p
Some shots of it loaded with the crates. It works with single or double load.