CREATE TABLE table_15040 ("Year" FLOAT, "Entrant" TEXT, "Chassis" TEXT, "Engine" TEXT, "Points" FLOAT)

What was the latest year that a Bardahl entrant had a Kurtis Kraft 500c chassis with no more than 0 points?
SELECT MAX("Year") FROM table_15040 WHERE "Chassis" = 'kurtis kraft 500c' AND "Entrant" = 'bardahl' AND "Points" < '0'
SELECT MAX("Year") FROM "table_15040" WHERE "Chassis" = 'kurtis kraft 500c' AND "Entrant" = 'bardahl' AND "Points" < '0'