Nice video. I tought about that a while ago. What detered me was, that from where I come from (Germany) despite that it is a pain in the ass with these regulations to import stuff (probably worst in europe), the vendor and the importer (in this case you) is responsible for malfunctions and/or dangers the products may expose to customers. You are responsible if for example the hoverboard has a malfunction and someone gets injured.
Don't you have this as well in the USA? I heard a lot of funny storries for example an old lady puting her cat in the microwave to dry after a bath. The cat dies and therefor she sued the company for millions of dollars that there was no hint animals shouldn't be put into microwaves.
Law in america is as idiotic as people living in america... they dont have much common sense