N.Y. Veh. & Traf. Law § 119

§ 119. House coach. Any vehicle motivated by a power connected\ntherewith or propelled by a power within itself, which is or can be used\nas the home or living abode or habitation of one or more persons, either\ntemporarily or permanently. In the application of this chapter to house\ncoaches, a house coach propelled by a power within itself shall be\ndeemed a motor vehicle, a house coach motivated by a power connected\ntherewith shall be deemed a trailer, and all house coaches shall be\ndeemed vehicles.\n