CREATE TABLE table_2454550_1 (most_laps_led VARCHAR, track VARCHAR)

Who had most laps led at Chicagoland speedway?
SELECT most_laps_led FROM table_2454550_1 WHERE track = "Chicagoland Speedway"
SELECT "most_laps_led" FROM "table_2454550_1" WHERE "Chicagoland Speedway" = "track"