Analysis Planes, Trains and Automobiles: Traveling by Car Uses Most Energy by Gary Kopycinski on January 9, 2014 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)–January 9, 2014. Fuel economy must improve 57 percent in order for light-duty vehicles to match the current energy efficiency of commercial airline flights, says a University of Michigan researcher.