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F1的比赛在世界上超过20个赛道进行，而Indy则集中在美国加拿大。. F1的比赛必须使用FiA的Grade 1赛道，而Indy有些赛道是Grade 2（例如多伦多湖边的公路赛道）。. 一般来说一个国家有超过一条Grade 1赛道就已经算多了。. 国内就上赛一家，日本有菱鹿和富士。. 而拥有 ...
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- IndyCar Series
Auto racing series held in North America
The IndyCar Series, currently known as the NTT IndyCar Series under sponsorship, is the highest class of American open-wheel car racing in the United States, which has been conducted under the auspices of various sanctioning bodies since 1920 after two initial attempts in 1905 and 1916. The series is self-sanctioned by its parent company, IndyCar, LLC., which began in 1996 as the Indy Racing Leagu... Wikipedia
