Marie Gluesenkamp Perez likes her car. For a congresswoman, it's not exactly flashy - a 2013 Volkswagen Jetta - but it has an upgraded engine, which is a boon when she's driving the winding roads near her home in rural Skamania County, Washington. "A Dieselgate Jetta," she told me on a video call, referring to one of the biggest scandals in automotive history, when VW was found to be rigging emissions tests.