What separates Formula 1 from all other forms of open wheel racing, is the basic premise of F1 revolves around the correct important issue that each team is a "constructor". That is, the chassis of the limousine must be designed and manufactured in-house, and chassis can Racing Schools not be supplied to competitors on a "customer" basis. Engines are unusually funded and/or developed by established chief motor manufacturers, and can be supplied exclusively to just lone team, or may be offered as "customer" engines, often to the smaller, lower-ranked teams.

Many category follow the Assembly N regulation with a few exceptions. There are several different series that are dart all over the world, most notably, Japan's Super Taikyu and IMSA's Firehawk List which ran between the 1980s to 1990s all over the United States.