Traction City

"It's like a city, but on wheels"

- Unknown

Description
Traction Cities are large cities built upon mobile traction platforms. They can range in size from a small village to a vast city....or so it is claimed. Very few have ever been spotted and it generally believed that they are now all lost, destroyed or fairy tales.

History
Traction Cities are marvels from before The End. It is believed they were discovered and claimed by survivors who used them to explore the reaches of the Frontiers. If such stories are true it is likely that they now roam The Expanse - it is the only place large enough for them and they are uniquely suited to survive there.