You mean this:

[youtu.be]

RVJ refugee Wrote:
-------------------------------------------------------
> James Bradley, Jr. Wrote:
> --------------------------------------------------
> -----
> > It would take more than re-gauging the rail
> cars.
> > BART uses third rail, so trolley poles would
> needs
> > to be added to the BART cars since the museums
> do
> > not use third rail. BART also doesn't use
> > standard couplers, so BART's couplers would
> need
> > to be replaced with standard couplers in order
> for
> > the BART cars to be interchanged (switched)
> with
> > the other equipment already at the museum. The
> > last problem is that BART cars use
> high-platform
> > loading, not standard step loading like the
> > historic cars. You would either need to
> rebuild
> > the BART cars so they had steps for loading, or
> > build a platform that the BART cars could load
> and
> > unload from.
> >
> > Given all of the changes that would need to be
> > made to BART's cars to make them usable at a
> > museum, the cars would lose their historic
> value
> > (if any).
>
> BART cars with trolley poles would certainly be a
> novel sight, but not unique. The Shore Line
> Trolley Museum in Connecticut uses trolley poles
> to run their New York subway cars.