They look like a stretched and widened version of the Lionel 027 autoracks. At 17.5" measured over the couplers, according to their site, they're slightly shorter than MTH's Premier-class autoracks.
Just have to make up some railroad logo stickers to place on the blank panels up on the car sides. If Menards treats these the same way as the double-stack cars (only offering the two colors), a sticker pack much like their billboards would be an ideal addition, as there are a number of roadnames that would work with the yellow and brown base color (CSX/UP for the yellow, and NS/Conrail for the brown, for example)
Mark, ya may want to have that line in the website's copy about "metal couplers" edited to "operating couplers", if the provided photos are correct then these have the standard plastic roller-bearing-style trucks. Wouldn't want anyone anyone here fussing over that detail 
(adds to his shopping list despite having 50+ of the MTH 'racks)
---PCJ
