Sounds like a stupid question, does it?
Well, according to CA Vehicle code §670
According to CA Vehicle code §415
Well, according to CA Vehicle code §670
I can ride a horse, thereby being moved upon a highway...A "vehicle" is a device by which any person or property may be propelled, moved, or drawn upon a highway, excepting a device moved exclusively by human power or used exclusively upon stationary rails or tracks.
According to CA Vehicle code §415
A horse is a horse, of course, of course, but, it seems, by these definitions, it is also legally a motor vehicle.a) A "motor vehicle" is a vehicle that is self-propelled.