A system for selectively disabling a vehicle. In the illustrative embodiment, the system adapted to prevent high-speed automotive chases. The system includes a first mechanism for locating vehicle to be disabled. A second mechanism launches a disabling projectile toward the vehicle. A third mechanism employs the projectile to disable the vehicle by suffocating an engine of the vehicle or otherwise compromising the fuel/air mixture. In a specific embodiment, and an infrared guidance system guides the projectile toward a muffler of the vehicle, and a muffler-plugging agent incorporated within the projectile plugs a muffler.