Code-Bullet/Hill-Climb-Racing-AI ? reverse-engineered prompt

Build me a browser game where an AI learns to play Hill Climb Racing on its own.

I want the car, wheels, ground, and physics to feel like a simple side scrolling racing game, and I want the computer to control the car with a neural network style learning system that improves over time by trying lots of runs. Show the current best car, let me watch generations improve, and make it easy to restart training or tweak the learning speed.

Keep it all in one simple web page that runs when I open it in the browser. If you need to check current docs for any libraries or browser APIs, go ahead and look them up online.