N scale track cleaning car?

[richdonovan]

Is there such an animal?

[ABC]

Yes, but not many inexpensive ones, most are pretty expensive, but you can easily rig up your own.

[James in FL]

IIRC there about a half dozen or so from different manufacturers.

A-Line, Atlas (Tomix), Aztec, Centerline...just to name a few.

Google "N scale track cleaning car".

Good Luck.