To Be OFFERED AT AUCTION at RM Sothebys' The Monterey Auction event, 13 - 15 August 2026.

$600,000 - $800,000 USD The sole known surviving Model 642 roadster, American’s sportiest creationA robust machine with a 60-hp T-head six and four-speed transmissionBuilt on the innovative Underslung chassis, one of the best-engineered of its periodFormerly owned by Harrah’s Automobile Collection and Bob BarrettAward-winning concours restoration, retaining original body metal and woodA magnificent example of an exceptional marque, and a pleasure to drive To me, the American Underslung is one of the Brass Era cars where the aesthetics are “just right.” The design just catches a spirit of speed, youth, and exuberance.

– S.M.If the Mercer Raceabout was America’s first hypercar, the American Underslung may well have been its first genuine grand tourer.

The Indianapolis-built motor car was designed by Fred Tone with a highly advanced chassis design, that ran below and dipped between the axles, serv...