The Davidson-Cadillac armored car was developed on a Cadillac chassis by Royal Page Davidson and the cadets of the Northwestern Military and Naval Academy in Highland Park, Illinois. It was the first all-around armored car developed in the United States. To convince the military that a mechanized army was the way to go, Davidson and some cadets drove the fully armoured car along with seven support cars for 34 days from the academy to the Panama-Pacific International Exposition (1915) being held in San Francisco, California. While not accepted by the military, it was used (along with other cars) by the cadets until 1927.
References
Bibliography New York Times - July 18, 1915 - "This Armored Motor Car is now touring across the continent." American men of mark (1917), A Thousand American Men of Mark Today Chilton company (1975), Automotive Industries, Item notes: v.77 1937 Jul-Dec Clemens, Al J., The American Military Armored Car, A.J. Clemens, 1969 Delta Upsilon fraternity (1902), The Delta Upsilon Decennial Catalogue Hunnicutt, R.P., Armored Car: A History of American Wheeled Combat Vehicle, Presidio Press (2002),
Marquis-Who's Who (1950), Who was who in America. 1943-1950, New Providence, New Jersey Marquis-Who's Who (1967), Who was who in America: A Companion Biographical Reference Work to Who's who in America Quaife, Milo Milton, Wisconsin: Its History and Its People 1634-1924, Volume 4, S.J. Clarke Publishing Company (1924) Randall, Frank Alfred, Randall and Allied Families, Raveret-Weber printing company (1943) Stern, Philip Van Doren, A Pictorial History of the Automobile, Viking Press (1953) Tucker, Spencer, Tanks: An Illustrated History of Their Impact, Willcox, Cornélis De Witt, The International Military Digest Annual: A Review of the Current Literature of Military Science for 1915-1918, Cumulative Digest Corporation (1916)