[GuB-42]

I think that part is wrong. You don't need a license to ride an e-bike in Japan.

However, what would be an e-bike in some other country would be classified as a moped in Japan, requiring a driver's license. In particular, the amount of assistance an e-bike can provide is limited, some power has to come from the rider to be classified as an e-bike. So it is possible that because of some quirks of the Japanese regulations, an electric suitcase would be classified as a moped, therefore requiring a license.

[stubish]

I think the classification is pretty standard. A bicycle has pedals. A motorcycle/moped does not. Legal definitions start drifting by region about things like can you ride an e-bike without using the pedals or maximum speeds. So I doubt anywhere would consider these bicycles. What is more interesting to me is if it fits into the same category as mobility scooter, wheelchair or golf buggy. Over here in my state, mobility scooters are only legal in public if you are injured, have difficulty walking or other disability. Electric scooters were entirely illegal until recently, unless they were under powered enough to be classified as a toy (which was so low they where incapable of transporting a teenager or adult)