In 1915, Davidson and 30 honor cadets drove an automobile corps of eight modified Cadillacs in a Glidden Tour from Chicago to the Exposition at San Francisco and back amidst much fanfare by reporters along the route. The caravan started near the Highland Park school where Davidson was in the Reconnaissance Car. They started on June 10, 1915, and they intended to pass through Moline, Iowa City, Omaha, Denver, and Salt Lake City to arrive in San Francisco for the Panama-Pacific Exposition on July 14, 1915.