Vision of the future, from 1969 Japan

Matt Alt in Tokyo, following up on a recent BB post about a 1979 American view of the future, shares this wonderful scan. He says:

This is 1969's view of 1989! It's from Shonen Sunday Magazine, a weekly comic compilation. Beautiful, groovy art. Hey, at least they got the "Roomba" right (even if they were off by a few decades!)