Draw a model vehicle in the viewport.

Input parameters:

1. Pl → Vehicle base plane.
2. Vh → Optional vehicle make. If omitted, a random vehicle will be chosen.
   • Hatchback1 → Hatchback1
   • Hatchback2 → Hatchback2
   •     Sedan1 → Sedan1
   •     Sedan2 → Sedan2
   •      Coupe → Coupe
   •        SUV → SUV
   •    CityCar → CityCar
   •    Minivan → Minivan
   •  CamperVan → CamperVan
   •  PoliceCar → PoliceCar
   •    CityBus → CityBus
3. Bc → Optional body colour override.

Output parameters:

1. Vh → Model vehicle.
2. Sp → Space taken up by vehicle including a 40cm buffer.