https://rmsothebys.com/en/auctions/HF18/Hershey/lots/r0104-1911-american-eagle-touring/718904

Engine No. 3525

a unique and one-off automobile, built by Martin Burzynski in Detroit, Michigan, in 1911.

Burzynski had patented the design for a novel tire that used aluminum sidewalls and spring-loaded canvas-and-rubber treads, backed by inflated inner tubes. In order to test his tires, Burzynski designed and built an entire car. He operated the Eagle Motor Car Company in Detroit and gave his vehicle the company name. He built his assembled car from readily available components: a Wisconsin 60-hp six-cylinder engine; Timken axles, bearings, and hubs; and universal joints from Blood Brothers Machine Company in Kalamazoo. The patented wheels were built for Burzynski by Turnbull Wagon Company in Defiance, Ohio. The result was a handsome seven-passenger touring car on a 132-in. wheelbase.