The strangest Road Runner magazine road test of all appeared in the Nov. ’68 edition of the now defunct Motorcade magazine. In a story titled “The Airstream Grand Prix,” author Wayne Thoms tested the limits of travel trailer towing by hooking a 31-foot Airstream Sovereign International to this ’68 Hemi Road Runner (equipped with 727 Torqueflite and optional power front disc brakes). Similar trailers were coupled to a Pontiac Ventura (powered by a 340hp 400 4-bbl), Chevy Caprice (with the 385hp 427 4-bbl), and Buick LeSabre (with 280hp 350 4-bbl), then a series of tests were conducted at Riverside Raceway. The Hemi won the 0–60 acceleration test in 14.9 seconds but lagged in the 65–0 panic stop at 193 feet (shown here, note the locked trailer tires). Oddly, the Buick and Pontiac stopped in 160 feet, sharing the win. With its 4,650-pound load, testers noted the Road Runner was prone to pre-ignition under full throttle. Where is this car today?