What was Johnny Rutherford's fastest lap while Al Unser was the pole position?
CREATE TABLE "race_results" (
  "rd" real,
  "name" text,
  "pole_position" text,
  "fastest_lap" text,
  "winning_driver" text,
  "winning_team" text,
  "report" text
);
SELECT "fastest_lap" FROM "race_results" WHERE "winning_driver"='Johnny Rutherford' AND "pole_position"='Al Unser';