This mod is a lot of fun, but there's some technical issues that hold it back. You're aware of them all, but there's one you haven't mentioned here - the wagon body has lights shining in places where the taillights aren't located. Aside from that, I'm very happy with this mod.
loads better now with the new thumbnails XD
Anyway, did Bernd/Atomix make this wagon specifically for this mod, or did you just source it from Atomix's old wagon ETKI mod?
much nicer though.