The Interchange is a mobile market gang that operates along the I-90/I-94 corridor between Chicago and Milwaukee, setting up temporary trading posts at highway rest stops, abandoned gas stations, and overpass camps. They're not fighters or hackers — they're merchants who happen to operate in a lawless space where the line between commerce and crime doesn't exist. About twenty-five members rotate between seven regular market locations, buying and selling goods that the corporate economy won't touch.

The Interchange deals in everything: salvaged electronics, black-market pharmaceuticals, bootleg augment components, homemade weapons, stolen luxury goods, counterfeit identity documents, and information of every kind. They don't manufacture — they aggregate. Scavengers, thieves, and small-time producers bring their goods to the Interchange, which provides the infrastructure of trade: fair assessment, standardized pricing, dispute resolution, and a neutral space where buyers and sellers can transact without killing each other.

The crew's real value is their pricing intelligence. The Interchange knows what everything is worth, everywhere in the GLMZ. They track supply, demand, and price fluctuations across the corridor with a sophistication that would impress a commodity trading floor. Need to know the current street price of a Meridian-class neural interface in Detroit versus Milwaukee? The Interchange knows. This information is itself a tradeable commodity, and the crew sells market intelligence to fixers, syndicates, and independent operators.

Protection is provided by the market's own customers. Attacking an Interchange market is the fastest way to become universally hated in the corridor, because everyone depends on it. The few gangs that have tried found themselves facing a coalition of every buyer and seller in the region.