CREATE TABLE table_203_262 (id DECIMAL, "year" DECIMAL, "team" TEXT, "co-drivers" TEXT, "car" TEXT, "class" TEXT, "laps" DECIMAL, "pos." TEXT, "class\ pos." TEXT)

what model car was the most used ?
SELECT "car" FROM table_203_262 GROUP BY "car" ORDER BY COUNT(*) DESC LIMIT 1
SELECT "car" FROM "table_203_262" GROUP BY "car" ORDER BY COUNT(*) DESC NULLS LAST LIMIT 1