The demonstrator cars have a slight variation as well. The first car has Roman serif lettering reporting marks, while the other two have Gothic sans-serif reporting marks. The rest of the markings on the three cars is identical.
The IMCO cars have variations also. But Trainworx is sold out so photos won't be posted.
Other than these four (Demo, CR, CEFX, IMCO), the multiple car number artwork for the remaining roads is identical.