You keep posting this stuff and Atlas should have many new customers!
Great looking car to me. Now, I have to buy it! Urrrggg.
Joe
You should try doing the "research" for this project. Talk about dangerous to the pocket book!
There are some really nice O scale freight car models out there from Atlas, Lionel, MTH and Weaver that cover from WW I to the modern era. If modelers can find out what is available, see photos and comments from other operators and decide what fits their desires I think we are all contributing something to the hobby and having a good time along the way. 
maybe there will be a new car announcement.
If so then it will be time for an update! 
Still pondering what kind of loads to put on them but they track very well and have good weight, even empty.
Matt
Coming out of BC you could go with packages lumber or utility poles. Aluminum ingots would be a good load too, especially for a low bulkhead car. Have a look below for views of the Milwaukee car barge service from BC Rail at North Vancouver unloading in Seattle at Pier 27. Be warned, if you look you may decide you need some Atlas 6507 or MTH 20-93484 box cars to go with them. Like all the new PS-1s the MTH 20-93508 is a great looking car and they even come in 6 packs! 
http://www.mrcd.org/puget_sound_barges.html
