Posts made by gippgig

@patrickmaynard Talk to trolley museums. Also note that many parts could be 3D printed. Talk to hackerspaces about this. One starting point would be to get an old car when it's scrapped and disassemble & document.
The flip side of this would be for the various streetcar & light rail operators to get together and design this. This is sort of what happened a century ago when the streetcar industry designed the highly successful PCC cars (altho they weren't open source). The same would also apply to subway cars.