Table: race_results_13
Columns: year
car_number
start
qual_speed
speed_rank
finish
laps_completed
laps_led
race_status
chassis

Question: How many years was he car number 92?
SQL: SELECT COUNT("speed_rank") FROM race_results_13 WHERE "car_number" = 92

Question: How many years was the chassis a lotus-ford 38/7?
SQL: SELECT COUNT("year") FROM race_results_13 WHERE "chassis" = 'Lotus-Ford 38/7'

Question: What was the race status(es) with the lotus-ford 38/1 chassis?
SQL: SELECT "race_status" FROM race_results_13 WHERE "chassis" = 'Lotus-Ford 38/1'

Question: What year(s) was the race status piston?
SQL: SELECT "year" FROM race_results_13 WHERE "race_status" = 'Piston'

Question: What is the largest laps led with the lotus-ford 34/3 chassis?
SQL: SELECT MAX("laps_led") FROM race_results_13 WHERE "chassis" = 'Lotus-Ford 34/3'