KC Neural Racing

12 distance rays (wall or car, closing speed), speed, sideways slide, spin, rpm, engine on, gear, pedal and steering positions, wheelspin, contact flags, and the direction of the road 20 m and 50 m ahead. No map coordinates, no track ID.

Clutch pedal, gas pedal, brake pedal, steering wheel and a shift lever (up · hold · down). Braking hard uses up the tires' grip, so brake before the corner, not in it.

Rear-wheel drive, 5-speed manual plus reverse. The clutch slips, so pulling away needs revs and a gradual release. Shifting needs the clutch pressed or the gearbox grinds. Below 450 rpm the engine stalls; holding the clutch in for 1 second restarts it.

Hitting a wall or another car faster than about 16 mph wrecks the car, and it stays where it stopped as an obstacle.

Each generation is on one of the 10 training tracks. Every team's drivers race in groups of 10, one driver per team. Each team keeps its best drivers, breeds and mutates the rest, and its best driver races in the recorded showcase replay.

The KC Grand Prix: Union Station, Crown Center, Grand Blvd through the Crossroads, T-Mobile Center, Power & Light, Broadway past the Kauffman Center and the straight past Liberty Memorial. Never used for training. Every 10 generations the champions race it to see whether the skill carries over.

Everything runs on the device, offline: the races in a background worker, the learning on the page, and the results saved in the browser's storage. Replays are re-simulated from the drivers' saved brains when you watch them, so each takes about 85 kB.