CREATE TABLE table_22905641_2 (race_1_winner VARCHAR2, circuit VARCHAR2)

Who was the race 1 winner of the race at Hidden Valley Raceway?
SELECT race_1_winner FROM table_22905641_2 WHERE circuit = "Hidden Valley Raceway"
SELECT "race_1_winner" FROM "table_22905641_2" WHERE "Hidden Valley Raceway" = "circuit"