I need to build an underground tram system.

[steinjr]

I'm assembling a group to help me make the miniatures, and we'll go off the shelf, if possible - I think H0 would suffice. But aren't there model trains for people as well as cargo???

Of course there are passenger trains in H0 scale. Lots of them.

Subway train (4 cars) http://www.walthers.com/exec/productinfo/920-31019

Passenger cars: http://www.walthers.com/exec/search?cate...er&scale=H

Diesel Motor Units: http://www.hornbyinternational.com/en/el...92-cp.html

Just use google (http://www.google.com) and look for
H0 subway
or
HO commuter train
or
H0 DMU

or any other phrases you can think of.

Question is whether H0 scale (1:87.1) will work for your purpose. A 60 foot car will be about 8" long in H0 scale. 1/5th the size you were recommended by people who actually know something about using models for film making

Smile,
Stein