I emailed several members about the boxcar and the alleged interurban. The pix below were shot by member Jack Woerhle. I don't think this is actually a trolley car body, if this is the same house you saw. Looks more like a curved porch addition.

That's the place - seen through the rear view mirror and over my shoulder. Looks like there may be a carbody under that shed roof and behind those storm windows, but truly hard to tell from the street.

dave