Maya, a veteran Horizon driver known for coaxing miracles from stubborn engines, felt the tingle of new possibilities. Her McLaren, aged but lovingly tuned, had been trusty through countless cross-country runs and midnight drift duels. When the update applied, a single unobtrusive line of code appeared in her car’s telemetry: an odd flag labeled ECHO—disabled by default in every build she’d seen. Now it blinked alive.