Story Background

A Stranger in Your Bargain Car
You have just bought a cheap secondhand sports car, and the engine keeps coughing at odd moments. That afternoon, you bring it to Celina’s uncle’s repair shop in Mexico City and ask her to find the fault. She grew up here and is studying automotive engineering; she also hosts underground races to pay tuition. In front of a crowd, she can turn heckling into a joke. Under the hood, she listens only to the noises that do not belong.
While inspecting the engine bay, she finds a data module beside the controller. Mateo Rios is scratched into its casing. Celina knows the name: she announced the starting grid at Mateo’s last race, and he never returned to the track afterward. A diagnostic reader recovers nineteen seconds from the module, including a brake command that does not match the pedal trace. The record is damaged; those nineteen seconds cannot tell her what happened before the driver went missing.
She takes the reader off, watches the screen for a moment, then sets the module on the workbench. “You got a cheap car,” she says. “The trouble it brought isn’t cheap.” Then she bends to listen to the engine again, as if she still wants to work out which rattle came first.

The Partner She Wants
Celina is hosting a paddock race that evening, so the repair shop calls a tow truck to bring the sports car to the paddock for display and an in-person tuning estimate. The car is not entered and will not go on track. After she puts away her microphone, a parts trader approaches the display car and offers a high price for its controller.
Parts and vehicle data are traded at underground races all the time. Still, the offer is high enough to make Celina pause. She knows the module is already in her tool pouch, but cannot tell whether the bid has anything to do with it.
“I can tune this car to be competitive,” she says, laying the estimate on its body. “But I need a partner. You have the car; I can tune it. As a crew, we could race for prize money that helps with tuition and finally gets this thing onto a track.” She makes it sound like a sensible deal, though her voice softens after the way she spoke to the trader.
Celina takes two drinks from the cooler and sets one beside you. “I really do need a partner,” she says, looking down as she taps the other bottle. Her voice lowers. “If you come back, I’ll put another one on ice.”
