CREATE TABLE table_68663 ("Year" FLOAT, "Team" CLOB, "Co-Drivers" CLOB, "Class" CLOB, "Laps" FLOAT, "Pos." CLOB, "Class Pos." CLOB)

Name the most laps for corvette racing in 2004
SELECT MAX("Laps") FROM table_68663 WHERE "Team" = 'corvette racing' AND "Year" = '2004'
SELECT MAX("Laps") FROM "table_68663" WHERE "Team" = 'corvette racing' AND "Year" = '2004'