The Roads Must Roll by Robert Heinlein:
Science Fiction Inventions, Technology and Ideas

This novella deals with the dangers of rapidly advancing technology. From the standpoint of "predicting the future" this story veers from our path; but the characters and situations are recognizable in our world. Select an invention:

Hush-a-Phone - noise suppression for telephones
A special kind of telephone that reduced noise while talking.

Rolling Road - public transport
A set of fast-moving strips to move people over distances.

Solar Reception Screen - photovoltaics in action
A device for converting sunlight to electricity

Tumblebug - a gyro-stabilized monocycle
A monocycle; a motorcycle that balances on a single wheel.

Two-Wheeled Car
A small passenger vehicle with two centerline wheels.

 

Technovelgy.com is devoted to the creative inventions of science fiction authors and movie makers. Look for the Science Fiction Invention Category that interests you, the Glossary of Science Fiction Inventions, the Timeline of Science Fiction Inventions, or see what's New.
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Science Fiction
in the News

Japan's AI Buddharoid Automonks
re: Ray Naylor
(1/25/2026)

MIT Computerized Bionic Leg Is Part Of The User
re: Charles Recour
(1/23/2026)

The New Habitable Zones Include Asimov's Ribbon Worlds
re: Harl VIncent
(1/23/2026)

California Governor Candidate Calls For Voting By Phone
re: John Brunner
(1/21/2026)

Robots For Hire En Masse
re: Raymond E. Banks
(1/19/2026)

China's Handheld Electromagnetic Gun
re: Richard Morgan
(1/17/2026)

3D Printing A 12-Meter Boat Hull
re: Murray Leinster
(1/15/2026)

China Still Working On Rescue Robot That Eats People
re: Various
(1/13/2026)

Lawyer AIs Create Chaos In Our Legal System
re: David Brin
(1/11/2026)

Chinese Hospital Tries Vonnegut's 'Harrison Bergeron' Cosplay
re: Kurt Vonnegut
(1/9/2026)

Robot Clerks Become A Reality In China
re: Miriam Allen deFord
(1/7/2026)

Can One Robot Do Many Tasks?
re: Robert Sheckley
(1/5/2026)

Atlas Robot Makes Uncomfortable Movements
re: James Cameron
(1/3/2026)

Boring Company Drills Asimov's Single Vehicle Tunnels
re: Isaac Asimov
(1/1/2026)

More SF in the News

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