BUSINESS: Tesla attracts a growing array of car buyers and stockholders, but can it scale up? Julia Pyper, E&E reporter Published: Monday, August 12, 2013 It only took one drive in a friend's Tesla Model S to convince Hollywood star Ashton Kutcher that he needed one, too. Please subscribe to ClimateWire to read the full story. Username: Password: Forgot your access codes? Recover them. Not a subscriber? Sign up for a trial. Ready to subscribe? Click here.