I live in Lake Forest, Orange County CA, and I likely could leave my $500 RC car on a table on no one would touch it. My area is one where most people drive Teslas and they are the common car here.
But what would a thief even do with a hobby grade RC car, will they try get into the hobby? Or will they rather have $50 even if the RC car they stole is used but they stole all the accessories needed to run it, even if they saw it was worth $500? If they are drug addicts, why don't they convince their drug dealer to get into RC cars and just say, I want $500 worth of drugs for a $500 RC car.
Only Los Angeles area, maybe DTLA, is where I will see the kind of people you're talking about. I was around those Dodger fans, they all seem happy, but the team won a World Series, so it's hard to say how they would have reacted if they lost and they were all in the street and then saw a $500 RC car being driven around in their after game riots.
I am sure it would have been fine to drive it after Game 7 in DTLA after the Dodgers won the World Series and residents were celebrating in DTLA. I think a $500 RC car doing donuts is much safer than illegal fireworks or car side shows.