Wow, disappointing on the couplers. I know from some of the cars I've bought over the years that they are not all created equal, but I've never had issue with any auto-derailing themselves. I know one of the cars(older from 90's) seem to sit slightly lower for the couplers itself. If the track was inclining or declining, this car would have issue.
For these cars not to have a swivel coupler like the old is a step into the mud. I guess they wanted to save money from what they lost for all this time, but that's not the way to do it. Guessing we're going to see more stories about bad derailments coming. ☹️
