The empty weight of a shipping container is only 5,100 lbs (+/-). If it's empty their would be no problem. If it's loaded with 55,000 pounds of cargo then you run into some major issues. Your main loaded towing issue would be the tires and axles. Once they break, and you are blocking an intersection, your next issue would be the lack of a class A license.
It's a cool idea but it's limited on its audience. It would probably sell to medium and heavy hauling tow and transport companies. I doubt many people will have medium or heavy duty tow truck in their garage.
2008 Toyota Sequoia SR5 5.7L 10k tow package
2017 Rockwood 2702WS
Equal-i-zer 4 point, Prodigy 3 brake controller
2016 nights camped = 11