I have found a problem when using the automatic vehicle facility.
Unlike the depot train assembly window, where we can marshal our trains in any formation we require. We assembling EMUs formations consisting of separate motor cars and trailers (such as Donteat’s Pennsylvania Railroad MP54 EMU). It’s impossible to marshal a train in anything but a simple formation with all motor cars at front and all trailers following. This is not how such as these trains where formed.
Could the vehicle replacement window be modified to allow custom train formations?