Model T 1917 ambulance, WWI American car. Plastic modelling is an area of model construction in which models are predominantly made of plastic (today mostly polystyrene). These are, as a rule, drive-free stand models in which more emphasis is put to achieve a high degree of detail than robustness or function, so there could be limitations. They are mainly made from preformed parts sets. It’s rare to find construction sets made from deep-drawn shapes (vacuum building kits) and pure resin construction sets.