Silicon Valley Billionaires tend to be younger, poorer dressed and generally less douchey than billionaires from other areas. Some are so poorly dressed that it is often hard to distinguish one from a hobo. In New York, a 23 year old scrawny male with t-shirt and jeans might be told to fuck off at a Lambourhini dealership but the same thing would never happen in Silicon Valley.
Sales person: Do you think I should even talk to that guy over there. It doesn't look like he can afford a car.
2nd sales person: That's Mark Zuckerberg