Seegrid Corp., the Pittsburgh-based manufacturer of Automatic Guided Vehicles, announced that is is launching two new products. The first, called the GT4, is a low-capacity tow tractor that automatically moves flatbed cars and trains. The second new product, the GWSL3, is an robotic walkie stacker that transports palletized goods. Both products are designed to reduce labor and operating costs, according to John Hayes, Seegrid’s VP of sales and marketing.