CREATE TABLE table_2454550_1 (most_laps_led VARCHAR, track VARCHAR)
SELECT most_laps_led FROM table_2454550_1 WHERE track = "Chicagoland Speedway"
 ใครมีรอบมากที่สุดที่สนามแข่งรถ Chicagoland?
Who had most laps led at Chicagoland speedway? 