Entrepreneurs are turning to AI to speed the creation of new businesses, with Gen Z leading the way. That's according to a new report from the payroll software firm Gusto. SACHA PFEIFFER, HOST: We know that AI is costing some people their jobs, but it's also speeding the growth of new businesses, especially among Gen Z entrepreneurs, meaning people under age 30. NPR's Andrea Hsu reports. ANDREA HSU, BYLINE: Coffee is a thing in Justus Shaw's family. Four of his five sisters have worked as baristas, and at home in Nashville... JUSTUS SHAW: We had - always had espresso machines, and we were always making drinks for ourselves and friends and guests. And so the table talk was always like, oh, we should open up a coffee shop one day. HSU: About this time last year, he turned that table talk into a mobile espresso bar. He calls it Shaws Coffee Cart. SHAW: My sisters obviously helped me work it. HSU: After all, they knew how to do latte art.…