PC Stepping Over The Coupler -- A Positive Tech Report!

After initially being frustrated by discovering that brake releases only exist on one side of a freight car in the Clinchfield route, I further found that it's possible to step over the couplers: just approach them slowly until the "Press E to step over couplers" prompt appears and then (duh!) press E.
This feature may also exist on other routes, but I hadn't encountered it before.

 

This feature was implemented on the class 20 with the limestone wagons too