They held two F1 races in Vegas in the early 80s. Literally in the Caesars Palace Parking Lot:
https://en.wikipedia.org/wiki/Caesars_Palace_Grand_Prix
As for the new race, it is logistically fascinating. Presumably they just shut down one half of the strip for vehicles...it's actually pretty well set up for this with so many pedestrian overpasses, but I wonder how they'll stop people from completely clogging them up for spectating?
Top speed will be right around the Bellagio fountains...should be some spectacular visuals...it's gonna look like a video game.
It's quite a long circuit - essentially tied with Baku and Jeddah for 2nd longest on the calendar. Will be most interested to see how they profile turns 11-14...not sure if a chicane is the right call for 11-12-13...