Your comments make total sense. It appears the zoo still operates the remaining track though.

Dark Cloud Wrote:
-------------------------------------------------------
> You'll see the Portland Zoo Railroad restored
> through the park at the same time you'll see the
> San Pedro Trolley and the Seattle Waterfront
> Trolley restored.
>
> Getting insurance coverage for miniature trains is
> probably expensive since there's been several
> instances where wrecks have occurred because the
> engineers went too fast around curves (just like
> full scale trains!). Cities want things that
> GENERATE tax revenue rather than things that SOAK
> IT UP. Also, when you have a city-owned miniature
> train or trolley, the riding public knows that
> there are "deep pockets" involved, and they have a
> tendency to slip and fall a lot, whereby they then
> hire a lawyer and sue. Trip-and-fall lawsuits are
> now as all-American as baseball and apple pie.
>
> [www.reuters.com]
> -idUSTRE72I48520110319
>
> [youtu.be]
>
> [www.trainweb.org]
>
> [youtu.be]
>
> [www.dailymail.co.uk]
> hey-wrong-tracks-Watch-moment-miniature-train-coll
> ides-car-nearly-flips-over.html