CREATE TABLE table_54238 ("Driver" TEXT, "Constructor" TEXT, "Laps" FLOAT, "Time/Retired" TEXT, "Grid" FLOAT)

what is the grid when the driver is mario andretti and the laps is less than 54?
SELECT MAX("Grid") FROM table_54238 WHERE "Driver" = 'mario andretti' AND "Laps" < '54'
SELECT MAX("Grid") FROM "table_54238" WHERE "Driver" = 'mario andretti' AND "Laps" < '54'