I'm not convinced that an automat-type car couldn't be done well. It might be impossible, but it seems possible that something could be done on that front...particularly if you used it as an augmentation to a cafe on a particularly long corridor train. For a quick example, I could see one having a place in the context of a 12-or-more-car Regional, since at that point you're facing three bad options: Add a second cafe (expensive), make BC passengers walk about 5 cars for their drinks (inconvenient), or start looking at 7-8 car walks for folks at the wrong end of the train. Both of the latter options also run the risk of an overwhelmed cafe.
I'd also point out two things: First, food (and vending) technology is a lot better now than it was in the 1950s/60s. Second, and possibly more importantly on the automat point, is that SP was specifically trying to wreck its passenger business and so likely gave them lousy food on purpose.
I'd also point out two things: First, food (and vending) technology is a lot better now than it was in the 1950s/60s. Second, and possibly more importantly on the automat point, is that SP was specifically trying to wreck its passenger business and so likely gave them lousy food on purpose.