But, but, what does it do?
Looks like a motorized "handcar" intended to protect the riders from the weather. As far as operating over non-powered frog is concerned, if you could find one, a combination of a decoder and a keep-alive capacitor would probably take care of it...if you could fit all that inside the cab. So far as otherwise making it over frogs, I think it would depend on the kind of frog...I mean, a big bullfrog might stop it, whereas a little tree frog wouldn't, although either would be messy!But, but, what does it do?
Here's another idea for your layout. When people ask, tell them the track gang was drunk.