almost positive it doesn't. definitely doesn't after seasonal events
I think it refreshes for every room you enter. If the track in the room changes, it will not refresh. Only new rooms. I haven't payed too much attention though, so may be wrong.
Thanks all- I'm trying to decide how to make some $$ when that special car shows up in the UCD.
Now I just try to keep lots of cash in the bank.
That would be the best solution, but there are so many great looking cars available! Maybe the seasonal races would work, as they should be pretty stable. I'll have to check on the Payout.