The vegan sensation ‘Impossible Burger’ isn’t available in Utah yet — except at Sundance

Park City • First, it was billboards, urging people to “demand the impossible.”Now, a new brand of vegetarian hamburger is going after the taste buds of Sundance Film Festival attendees by giving them something a billboard can’t: Free samples.“It’s a lot better than I expected,” said Julia Heath, a first-time Sundance visitor from Sacramento, Calif., who tried one of the new Impossible Burgers. Noting that it’s “more seasoned” than a bee