Calls for regulation to discourage using diesel reliant utes

Utes and SUV's, some of the country's top selling new vehicles, are in the spotlight due to their capacity to guzzle fuel. With prices rising at the pump, there's concern about diesel stock, which largely keeps industry moving, including freight and farming. It's prompted calls for more regulation to discourage people buying supersized vehicles. Professor Alistair Woodward from the University of Auckland's Faculty of Medical and Health Sciences wants to see habits change. He spoke to Lisa Owen.