It's just a markdown file converted to html and served from a Fastmail folder.
My process was:
Read this thread  yesterday afternoon. Thought this sounded like a "looser" work environment. Searched "synonym loose". 3rd result was "unaffixed". Bought unaffixed.com and pointed it at Fastmail. MD to html with pandoc. Added water.css stylesheet last night. Thought up some ideas on making it better.
So, um, affixed.
For this to be useful you’ll need some screening. Good luck with it!
(And assuming comma.ai posted this themselves, what a bizarre thing to do: start your recruiting process with an obvious lie? What does that say about your corporate culture?)
Already being crappy and failing fast....