The Bachmann HO scale Peter Witt trolley is still, in my opinion, the finest mass-produced traction model I've seen since I got into the hobby 35 years ago. One of the great things about it is that it lends itself to rather easy modification. Over a year ago, I finished turning one into a model that looks very much like a Cincinnati Street Railway 100-series car. These were Peter Witt-style cars built by the Cincinnati Car Company in 1928. In fact, in 1930, Cincinnati Car Company shared the order for the Baltimore Peter Witts with Brill.

To see my modified Witt in action, visit YouTube and search on "Streetcars Trams Cincinnati" or enter http://www.youtube.com/watch?v=-fLn2hw7j3o
The model is easily negotiating 7-inch radius curves without changes to trucks or floor. The model is running 2 rail--the overhead wasn't quite ready for the show.