Sally Strange started reading The Big Roads by Earl Swift
An interesting coincidence: on July 7, while listening to this book, I learned that Lt. Col. Dwight D. Eisenhower, then aged 28, set out with the Army Motor Transport Corps Convoy on a cross-continental trip from Washington D.C. to San Francisco CA on the historic Lincoln highway. On July 7, 1919.
Much of this "highway" was unpaved, so the convoy averaged less than 6 miles per hour all told. They had constant breakdowns and traveled with a blacksmithing and machining capacities in order to repair broken vehicles. They also crushed, and then rebuilt, dozens of wooden bridges.
They arrived in Oakland on Sept. 4 and took the ferry to San Fran the next day.