Show HN: Kosmic Kart – Mario Kart-style racing with friends in the browser

Made this for Kosmi, where you hang out with friends in a room: send a link and you're racing over voice and video in the browser, no install. It's all three.js with the karts, items and tracks generated in code, and each browser runs its own kart's physics and sends it to the others P2P over WebRTC data channels.

how does it hold up when one person's connection is rubbish?