Simply put, this strange Sanyo invention from the 1970s “was a human washing machine that cleaned, massaged and dried the occupant in a fully-automated 15 minute cycle.” Video after the break.

A descendant of the Ultrasonic Bath concept called the HIRB (“Human In Roll-lo Bathing”) system works in a similar fashion – scrubbing the elderly to a sparkling shine.

[via Gizmodo]