CREATE TABLE table_61213 ("Date" TEXT, "Series" TEXT, "Circuit" TEXT, "City / State" TEXT, "Winner" TEXT, "Team" TEXT)

Which circuit did winfield team nissan win for the tooheys 1000?
SELECT "Circuit" FROM table_61213 WHERE "Team" = 'winfield team nissan' AND "Series" = 'tooheys 1000'
SELECT "Circuit" FROM "table_61213" WHERE "Series" = 'tooheys 1000' AND "Team" = 'winfield team nissan'