By the way, today I saw old man and woman riding electric scooters with seats (they look like this [1]). I thought that it could be useful for senior people in

By the way, today I saw old man and woman riding electric scooters with seats (they look like this [1]). I thought that it could be useful for senior people in the city. But our city is mostly flat, of course they won't help to climb those endless stairways in Japan. [1] https://www.dhresource.com/0x0s/f2-albu-g6-M01-8B-09-rBVaSFtsPI2AJy9nAAD2G6FUc2I630.jpg/3-wheel-electric-scooter-with-seat-electric.jpg https://www.dhresource.com/0x0s/f2-albu-g6-M01-8B-09-rBVaSFt...