Variously calling the car the "Buggyabout" and "Unique", it was a high wheeler with an air-cooled two-cylinder four-stroke engine, friction transmission, and chain drive.

[3] Hatfield bodies and chassis were provided by Kauffman Buggy Company, located across town.

As receivership loomed in spring 1908, Hatfield merged with Kauffman to form Advance Motor Vehicle Company in June, 1908.

[10] In 1912, the Hatfields moved to Elmira to manufacture trucks in conjunction with David H. McConnell, G. C. Brown, Alexander D. Henderson, and G. W. Blanchard.

[11][12] On November 17, 1913, W. A. Rexford acquired a large interest in the Hatfield Auto Truck Company.