Kammala wannan jumla: Dan wasan Formula One na farko na Thai shi ne Prince Bira wanda ya halarci tseren Gasar Duniya 19 tsakanin da kuma. Ya ci maki 8 kuma yana da matsayi mafi girma na karshe na matsayi na hudu wanda ya samu sau biyu: a
1950 Swiss Grand Prix da kuma 1954 Faransa Grand Prix. Matsayinsa mafi girma a ƙarshen kakar wasa shine 8th a ciki.