Yep. A lot of people thought that the German Autobahn inspired Ike to build the Interstate Highway System.
But in fact it was that 1919 Washington DC to San Francisco Motor Transport Corps convoy.
https://en.wikipedia.org/wiki/1919_Motor_Transport_Corps_convoy#Results
"In western Wyoming Eisenhower and a companion convinced the convoy that an Indian attack was imminent. Sentinels were posted that night, but when Ike and friend exchanged warrior yelps outside the perimeter a young officer on guard discharged his weapon. They had to stop a telegram being sent to the War Office reporting an encounter with hostile Indians. "
But in fact it was that 1919 Washington DC to San Francisco Motor Transport Corps convoy.
https://en.wikipedia.org/wiki/1919_Motor_Transport_Corps_convoy#Results
There's even more to the story of the gestation of the interstates than just that. Read "The Big Roads" by Earl Swift.
ff