How far it banks into turns (1 = coordinated turn like an aircraft or bicycle; negative leans out).
Where it moves.
Engine exhausts (rocket plumes, afterburners).
OptionalhitchArticulation (trucks), vehicle-space z: where this vehicle's kingpin and the axle it pivots
on are (trailers), and the coupling the next trailer's kingpin sits on (fifth wheels).
Parking spots for other vehicles (carriers).
Tint candidates for painted surfaces (#rrggbb).
Parts. The first is the static body.
Bounding size (x width, y height, z length), metres.
Rocket stages (0 for everything else).
Resolved style (sedan, airliner, locomotive, …).
Bow lift with speed (planing hulls).
Vehicle type.
Engine smoke outlets (tailpipes, stacks, chimneys); empty for electric vehicles.
Wake width factor (0 = no wake).
Distance between front and rear axles (steering), metres.
A generated vehicle: meshes per part plus what the motion needs to know.