President and CEO of Volkswagen Group of America Jon Browning speaks at the Guinness World Record certificate presentation on Monday, June 24, 2013 at Volkswagen Group of America headquarters in Herndon, Va. Volkswagen of America challenged and broke the existing Guinness World Record® achievement for the "lowest fuel consumption-48 U.S. states for a non-hybrid car." The two drivers averaged 77.99 mpg while piloting a 2013 Passat TDI® Clean Diesel on an 8122-mile, 48 contiguous state drive leaving from and returning to Volkswagen's Herndon, Va. headquarters. (Kevin Wolf / AP Images for Volkswagen of America)