Three cool buses with doors correctly listed in the model hierarchy (For those who didn't get it: all doors open perfectly with bus open component v4.0) I think that's it for the bus fanatic.
P.S. The installation is not listed in the read me file. Installation: First, extract the ggm files somewhere from the archive, drag them into the ggmm window (if not, google it) and click on the install button. Settings are set automatically.