Yes it can be 3D printed, with quite nicely rendered details. I've had success printing fine features such as rivets and intricate window frames in FXD. I would recommend however to add separate grab irons after the fact, as shapeway's minimum wire size is very chunky.
That said, it will be quite costly if you need a fleet of them! Also, it is imperative to first have a set of accurate drawings to work from. I've been working on CNR "canadian flyer" cars for a while now, and with only rough diagrams to work from, getting the roof to look right has been difficult at best. Your roof line seems much more complex.