In terms of low-tech mobility objects: rather than imitating the car, thinking about other mobility systems, called "intermediate", is a promising line of research. These are all vehicles weighing less than 500 kg between the classic bicycle and the car.
Among the easiest examples to find on GrabCAD, there are cargo bikes. Below is a model by Egor Samovar. URL : Cargobike Long Frankee
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