CREATE TABLE table_10172 ("Driver" TEXT, "Constructor" TEXT, "Laps" FLOAT, "Time/Retired" TEXT, "Grid" FLOAT)

Name the highest laps for maserati and +6 laps for grid more than 11
SELECT MAX("Laps") FROM table_10172 WHERE "Constructor" = 'maserati' AND "Time/Retired" = '+6 laps' AND "Grid" > '11'
SELECT MAX("Laps") FROM "table_10172" WHERE "Constructor" = 'maserati' AND "Grid" > '11' AND "Time/Retired" = '+6 laps'