CREATE TABLE table_43685 ("Class" TEXT, "Team" TEXT, "Driver" TEXT, "Chassis \\u2013 Engine" TEXT, "Laps" FLOAT)

What was the highest amount of laps for class c1 and driver Derek Bell?
SELECT MAX("Laps") FROM table_43685 WHERE "Class" = 'c1' AND "Driver" = 'derek bell'
SELECT MAX("Laps") FROM "table_43685" WHERE "Class" = 'c1' AND "Driver" = 'derek bell'