มีกี่รอบเร็วในการแข่งขัน 6 รอบโดยมี 30 แต้มใน World Series โดย Nissan?ไม่จำเป็นต้องใช้ตารางทั้งหมด
How many fast laps are in 6 races with 30 points in the World Series by Nissan?It is not neccessary to use all the tables.
 table_67180:  "Season" [ text]  "Series" [ text]  "Team" [ text]  "Races" [ text]  "wins" [ text]  "Points" [ text]  "Pos." [ text] 
SELECT "Fast laps" FROM table_67180 WHERE "Series" = 'world series by nissan' AND "Races" = '6' AND "Points" = '30'