CREATE TABLE table_44246 ("Fin. Pos" TEXT, "Car No." TEXT, "Driver" TEXT, "Team" TEXT, "Laps" TEXT, "Time/Retired" TEXT, "Grid" TEXT, "Laps Led" TEXT, "Points" TEXT)

Which Laps has a Points of lead changes: 13 between 8 drivers?
SELECT "Laps" FROM table_44246 WHERE "Points" = 'lead changes: 13 between 8 drivers'
SELECT "Laps" FROM "table_44246" WHERE "Points" = 'lead changes: 13 between 8 drivers'