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)
Warfare Goes Underground In Ukraine
'Once in the very first weeks of the war, before everyone had been evacuated from the surface...' - Philip K. Dick,
Technovelgy (that's tech-novel-gee!)
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Tactile Skin Supplier Map
'What strange sensitivity! What an amazing development of science was manifested in every move and act and word of this Robot!'
Orb Nomad Zero-Emission Electric Aircraft
'That explains how it was so easy for me to remain motionless in midair or to perch on a flagpole in imitation of a giant bird, even in the windy city of Chicago.'
DIY Robot Scorpion Crushes It
'...it raised its front end off the ground and waved its antennae at them, then raised one armoured claw as if to snip them out of the sky.'