CREATE TABLE table_16018 ("Round" FLOAT, "Circuit" TEXT, "Date" TEXT, "Pole Position" TEXT, "Fastest Lap" TEXT, "Winning Driver" TEXT, "Winning Team" TEXT)

What circuit was the race where Hideki Mutoh had the fastest lap?
SELECT "Circuit" FROM table_16018 WHERE "Fastest Lap" = 'Hideki Mutoh'
SELECT "Circuit" FROM "table_16018" WHERE "Fastest Lap" = 'Hideki Mutoh'