Yes I have but I notice I'm the only one from the US in a full room. Does that matter? I'm not sure, just an observation. I'm also up into the early hours here in Ohio when the good cleaner races happen.
I've also spent an hour trying to even enter a room.
I'm also the guy that tries to be super clean and stops at the finish line to let other people by because I'm pegged at 50 million and have 500 cars that I don't even care about. Maybe the Kaz Magic senses that and pairs me up with other clean drivers.
If you keep trying you'll find the right room eventually. I've even found rooms where people on my friend list are there.