I really wanted to do WebRTC multiplayer for mine but ran out of time because of working on the driving AI, I'm curious about your implementation!
Sadly, no other players ever raced me on this one, but I'm really glad you went for multiplayer!
Viewing post in Loop Racing multiplayer jam comments
It was actually surprisingly easy to get going with godots multiplayer classes. I set up one headless instance of godot on a aws server, used ngrok for a static https adress. Then used godots multiplayer helpers to choose which parts to sync.
I was prepared to do it the hard way but this was surprisingly easy, can really recommend it!