Powertrack Hobbyists (persons who pursue a particular hobby) have created shells of four car models.
Keen hobbyists have produced alternate shells for existing chassis examples are listed below, the makers of such shells are as yet unknown. Hobbyists may be identified under three sub-categories: casual leisure which is intrinsically rewarding, short-lived, pleasurable activity requiring little or no preparation, serious leisure which is the systematic pursuit of an amateur, hobbyist, or volunteer that is substantial, rewarding and results in a sense of accomplishment, and finally project-based leisure which is a short-term often a one-off project that is rewarding. 
