SF readers know that science fiction authors are well ahead of the game; for example, consider the napcap rental facility from Larry Niven's 2003 novel Saturn's Race:
She punched her card into the Napcap's slot. The lid lifted and she crawled inside. It shooshed down. The inside received her as a womb. The prospect of rest triggered an avalanche of yawns, and she was asleep before the lid sealed fully back in place. (More)
Update: 24-Feb-2024: As far as I know, the first use of the phrase "sleep pod" in science fiction is from Mantis (1967) by Chris Boyce. End update.
Scroll down for more stories in the same category. (Story submitted 2/9/2023)
A Remarkable Coincidence
'There is a philosophical problem of some difficulty here...' - Arthur C. Clarke, 1953.
Technovelgy (that's tech-novel-gee!)
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Boy Makes Biomimetic Turtle Robot
't came out into plain view. Darkington glimpsed a slim body and six short legs of articulated dull metal.'
Elon Musk Wants Data Centers In Space
'Internally it’s made up of millions of components, but the most important ones are the thinking and memory parts of the Mind proper.'
Origin F1 Humanoid Robot's Facial Skin
'I could look down at that face of carefully molded synthetic rubber, tinted the exact shade of the doctor's living flesh.'