In case anyone is interested, here's an update from Doug Peck on the Moxie cars:
UPDATE: September 6, 2018----We are still awaiting delivery of the last 300 MOXIE convention tank cars, which are still in China waiting for final assembly of the trucks. Our understanding is that the wheelsets were made in a separate factory from the cars themselves, and that factory closed without notice last month, delaying the delivery of the wheelsets. Just after the convention closed, we received the first 200 cars, and soon afterward began packaging and mailing them out. After sending the first 100, we have had a very few reports of damaged cars, which upon return we are replacing, but as a result, we are now opening and checking every car before we package and mail the remaining cars. Please be patient if you are awaiting receipt of your cars. The process will continue until we have filled all orders. Orders are being filled in the sequence in which they were originally received. Check back on the convention website (bsgr.us) for future updates as we get more information.
Meanwhile, there are still about 60 pair of cars available, so don’t hesitate to order.