What is the lap record for the Austrian Grand Prix Circuit?
lap record means the fastest time recorded which refers to time
WITH fastest_lap_times AS ( SELECT T1.raceId, T1.fastestLapTime FROM results AS T1 WHERE T1.FastestLapTime IS NOT NULL) SELECT MIN(fastest_lap_times.fastestLapTime) as lap_record FROM fastest_lap_times INNER JOIN races AS T2 on fastest_lap_times.raceId = T2.raceId INNER JOIN circuits AS T3 on T2.circuitId = T3.circuitId WHERE T2.name = 'Austrian Grand Prix'