Analysis Fuel Economy Up, But Consumption Up Even More by Gary Kopycinski on March 5, 2013 Gary Kopycinski Author More in Analysis: Martha Washington’s Enslaved Maid Ona Judge Made a Daring Escape to Freedom – but the National Park Service Has Erased Her Story From Philadelphia Exhibit February 14, 2026 Always Watching: How ICE’s Plan to Monitor Social Media 24/7 Threatens Privacy and Civic Participation November 10, 2025 Full-blown Fascism Has Arrived in America as the Pentagon Expels the Press October 16, 2025 ANN ARBOR–(ENEWSPF)–March 5, 2013. Although vehicle fuel economy has improved 40 percent since 1970, the total amount of fuel used has increased by more than half, says a University of Michigan researcher.