they let this drive on the road

As I was riding in my taxi home, I spotted a lady driving her motorized cart on the highway with her little yellow flag whipping in the wind. I think she was going mock 2. I sure hope she had her seatbelt on. I shouldn't be making fun of her becasue I secretly want to be her when I am old and can't walk. I will also use the handicapped spot for my scooter, too. Can they tow that? Would they want to? I just laugh saying "Only in Japan".