In an interview, Tony Greszler, VP of engineering for Volvo Powertrain, talked about government mandates and the future vehicles. They've some preliminary indication of what Obama administration's expectations are, but they haven't seen any context, and that's crucial, given the variables related to the diversity of applications in which trucks are used. They could probably squeeze 3% more from their engines: about 1% per year during the next three years. That's feasible for some engines. They've actually calculated numbers and determined that their engines, on average, would be about 10% more fuel efficient than they are now, had there been no NOx mandates. They've spent somewhere around $500 million dollars since 2007 to meet the 2010 emissions regulations. They'd expect truckers to adopt technologies to meet the emissions standards, but he doesn't know if all of the new objectives can be met with aerodynamics and more efficient engines. Some might require different optional equipment that will now be made standard.