“We are confident we will find an acceptable solution,” VW brand chief Herbert Diess said at a press conference at the Consumer Electronics Show in Las Vegas, Nevada. Volkswagen has admitted it installed software in certain diesel models sold in the U.S., that allowed the cars to pass government emissions tests, but then emit nearly 40 times the allowed levels of pollutants on the road. The U.S. Justice Department on Monday sued Volkswagen for up to $48 billion for allegedly violating U.S. environmental laws.