Mike might have not remembered to measure the Traditional O Gauge Waffle-Sided Boxcar with an O Scale Ruler and an S Scale Ruler. then measured the new American Flyer Waffle-Sided Boxcar with an S Scale ruler and an HO Scale ruler. They compressed a nearly S Scale freight car from the O gauge line for the S Gauge Line. They made a 50' Boxcar into a 40' Boxcar.
Andrew