Whole Foods Market launched food truck test kitchen Tartinette on March 10 at the grocery retailer's flagship store at 525 N. Lamar Blvd., Austin. The truck serves a selection of open-faced sandwiches and creative salads and will change its name and menu every two months to reflect and explore food trends and seasonal flavors. Two percent of sales from the test kitchen will benefit a series of nonprofit organizations, starting with the Austin Food & Wine Alliance.