Formula 1 hopes that taking its Las Vegas GP through the heart of the city's 'strip' will help supercharge its growth, particularly in the US. To do that, though, it's had to rip up its business model and invest heavily - perhaps to the tune of $500million
California's car culture is pretty much dead now. I don't see a ton of people going to Vegas for this annually; maybe once. With most of mod culture killed, the average potential enthusiast is missing from the equation IMO, as such a person that has built hotrods, painted professionally, did custom graphics, and worked in a few machine shops porting heads and building motors. Vegas is mostly driven by SoCal. There are still some enthusiast holdouts, but not enough to fuel the thriving culture and businesses of decades past.