Around 20-25 years ago, the maximum width of highway vehicles in the US increased from 8' to 8' 6"(a.k.a. 102"). Most highway trailers made the switch almost immediately, but "sea-land" containers more slowly. Still, you should be able to get a 102" wide (outside) container now. And they do come in "extra tall", which is what might -- maybe -- work for a bus. And they come in 48 feet long. Call your local intermodal trucking company. Then measure carefully. Still, it seems a long shot.
But it is indeed possible to hire a container for personal shipping. Been..., done.... They bring it out and pick it up when you have loaded it. But it stays on the chassis while at your house, so to load a bus, you would need a loading dock. The trucking company may have a suitable dock. Reverse at other end, and the container disappears back into the system. Works well.
Generally, container shipping is an affordable mode of shipping.
All I know!