Everything that is neither aircraft, armour nor vessel collects in this group: automobiles, figures and standalone objects, among them pre-coloured models of small arms whose parts lock together without glue. It is the catch-all of the building kits branch, so the composition is deliberately mixed.
That mix is also the point. A group like this is where you look for a build that does not fit a collecting theme – a single object, a figure to go with a vehicle, or something to hand to somebody who has never assembled a kit before.
If a car is what you are after specifically, the deepest choice of scales and types is in car and formula model kits. People to build and paint, from small scales up to large figures and busts, are in model figures. The remaining subject groups are listed in building kits, where they are split by type of machine.