Evolve AI cars, then race your champion against the world.
Each car is a polygon chassis drawn as triangles (each triangle has its own mass — blue is light, red is heavy), with wheels pinned to its corners and spun by motors. The whole population drives at once; the gold ▼ marks the current leader.
When every car has stalled or fallen, the ones that travelled furthest are selected, combined (crossover) and mutated to breed the next generation. Triangle and wheel counts evolve within the ranges you set. Both seeds make a run fully reproducible.