Do any members have, or do any members know where I can locate plans for modern box cars such as the FMC 52ft "Railbox" cars?

I'm amazed that with all the modern locomotives available in G scale, there are none of the prolific Railbox prototypes.It grinds my flanges knowing there are ripoff models ( older cars with non prototypical new artwork) being run,so I want to make some myself.

Anybody know the history / rationale behind the CSX (?) intermodal yard in the middle of Charlotte NC airport?  Struck me as odd to taxi over a yard lead to the terminal.

Years ago I bought a copy of the Railway and Locomotive Historical Society’s “Railroad History, No. 128,” Spring 1973 issue, that contains James E. Lane’s historic summary of USRA freight cars. The USRA freight cars have been noted in many hobby articles over the years. Some have featured prototype photos and references to Lane's 1973 article. But these are mostly out of print and often touch on only a portion of the USRA freight cars. 

I take the West Coast Express commuter train from my home in the 'burbs to downtown Vancouver on a daily basis.  It offers a chance to catch up on reading, work, sleep but most importantly gives me an opportunity to railfan.  Today we arrived at the downtown station with a bunch of grain cars parked on the adjacent yard track.  One car in particular caught my eye, CN 385722, a PS4750 grain hopper built in November 1978.  It has what looks like 3 sets of reporting marks: The current CNA (Canadian National), prior SR* (unknown); and an earlier KC* (maybe