Yo. I'd kind of like to be able to use Just Go, and have it do what I mean, which is:
I want to get into any vehicle I place, except trains - locomotive, wagon, whatever, just no, rather than just go. :)
I do use trains for personal transport, sometimes, but that is managed by the train network for players mod. I bring them to me on the rails, not by keeping them in inventory.
Cars, on the other hand, and especially the "Cargo Ships" mod boat-which-is-a-car-on-water, I would love to jump into and go - and collect when done, because how many times have I forgotten to do that, and had an annoyingly long walk back.
I'd be fine with it being a checkbox for "trains yes/no" and nothing more.