Yes, that is a MTH Premier line corrugated auto carrier... All of the MTH ones seem to be 20" long, which equates to being 80' long in real life...
Just so you all know, the Lionel one that I am referencing is in this set:
http://www.lionel.com/Products/Find...=overland&CategoryID=0&RailLineID=&CatalogId=
I was told by an eBay member that it was 15" long... The auction ended already, but I will not be happy until I get to the end of this :laugh:
They made shorter ones in the old days, but they were flatbeds modified for car hauling.

I couldn't find any 60' ers.
Heres a link that some might want for future RR car reference.
http://www.worldtraderef.com/WTR_site/Rail_Cars/Guide_to_Rail_Cars.asp
Did you see this in any of your search's B&M?
In an effort to cut shipping costs with it’s brand new 1971 Vega Chevrolet worked with Union Pacific to develop “Vert-A-Pac” which allowed 30 cars to be shipped versus 18 that a normal boxcar could carry. Because of the vertical shipping method, the railcars were taller than normal forcing the railroad line to follow special routes to avoid low overpasses.
According to Collectible Automobile The Vegas had four removable steel sockets inserted into the undercarriage. As the Vert-a-pac car doors were lifted and closed the Vegas would roll forward an catch on hooks on the doors. When the doors were fully shut the Vegas were suspended side by side, roof to roof.
The Vega’s engine oil pan had a special baffle to keep oil from seeping into the number 1 cylinder while the cars were vertical. The battery caps, carburetor float bowls and windshield washer fluid reservoirs were also designed to prevent fluids from leaking during shipping.