In 1919, a young Army officer named Dwight Eisenhower, along with a "Mad Max"-style military convoy, set out on a cross-country road trip to examine the nascent state of America's roads. Penn State Altoona's Professor Brian C. Black explains how this trip influenced Eisenhower's decisions decades later, both as general and president, and laid the groundwork for the rise of petroleum-based engines and the interstate highway system.