Input (grade 13): Following difficulties partly due to the 1929 stock market crash, it was decided to build a racing circuit instead, construction started in 1938 and the track was inaugurated in May 1940.
Output (grade 8): Following financial difficulties, partly due to the 1929 stock market crash, it was decided to built a racing circuit instead. Construction started in 1938 and the track was opened in May 1940.