Lionel 6-29158 O Gauge Southern Aluminum 2 Car Passenger Set. Each Aluminum Passenger Car 2-Pack perfectly matches its corresponding set offered in Lionel Classic Trains Volume 1, 2003. Each 2-Pack also features upgrades like all-new sprung trucks, all-new end vestibules and separately applied roof vents and grab handrails. Included are a baggage car and a coach car. Features include all-new die-cast metal sprung trucks and operating couplers with hidden uncoupling tab, all-new separately applied metal details including roof vents and grab handles, all-new detailed end vestibules with opening doors and working displays, metal frames, extruded aluminum bodies, authentically detailed and painted interiors, hand-painted passenger figures, interior lighting with ON/OFF control and each car measures 15 inches long.