Question: How many years was he car number 92?
SQL: SELECT COUNT("Speed rank") FROM "1-181892-4" WHERE "Car number" = 92.0;

Question: How many years was the chassis a Lotus-Ford 38/7?
SQL: SELECT COUNT("Year") FROM "1-181892-4" 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 "1-181892-4" WHERE "Chassis" = 'Lotus-Ford 38/1';

Question: What year(s) was the race status Piston?
SQL: SELECT "Year" FROM "1-181892-4" WHERE "Race status" = 'Piston';

Question: What is the largest laps led with the Lotus-Ford 34/3 chassis?
SQL: SELECT MAX("Laps led") FROM "1-181892-4" WHERE "Chassis" = 'Lotus-Ford 34/3';