This paper presents the trend of the motorsports related technology focusing on Fl, Champ Car and Le Man using high technology and high fundamental technology. Indeed each category of these three has its own regulation. Therefore the difference in the regulations which depends on the restriction level for usable technology requires different technological development. One is using real high technology while another is using high fundamental technology. Taking these affairs into account, characteristic of the each technology for each mortor sports category is described from engine point of view.
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