Over the speakers at the Mercedes-Benz showroom on the north side of Beverly Hills, a smooth jazz cover of “Beauty and the Beast” serenades Vince Staples, the 22-year-old rapper from North Long Beach. He’s sipping coffee procured from an exceedingly fancy office espresso machine. Don’t tell him he’s not getting money. “A 710 credit score?” the white-bearded salesman says. “I hope my grandkids can be that responsible!” Read more…