I've ridden the Pink Pig!

I can only barely remember it because I was a little kid at the time (looking at the history of it, it was probably the very last year before it shut down, or close to it). What I do know is that the suspended monorail at the Rich's downtown was way better than the imitation BS they have at the Macy's at Lenox these days.

yeah but not inside a store :D

The Wuppertal train is legitimate public transit (as legitimate as a gadgetbahn can get, anyway). These department store trains we're discussing were gimmicky rides for children. I could be wrong, but I don't think adults even fit in them.

Yes, they're both suspended from overhead tracks, but that's about the only similarity.

Nah, the one in OP's picture is almost certainly a different one. There's no reason Atlanta's Pink Pig would've ever had "John H-[scribble] Rocket Express" written on the side of it.

Also, it seems unlikely that a department store would install something completely unique (especially one in some random second-tier city like Philly or Atlanta), so surely more than one of these things existed at some point.