The train's engineer sat in a small compartment in the nose of the train, directly in front of the prime mover. Behind the engine in the first car was a long railway post office section. The second car consisted of a small baggage section and a short buffet and 20-passenger coach section. The third and final car in the train, as originally built, was configured as half coach (40-passenger seats) and half observation car (12 passenger seats). As built, the train had 72 seats and could carry 50,000 pounds (22.7 tonnes) of baggage and express freight. After a series of demonstration runs, the trainset was christened the "Burlington Zephyr" on April 18, 1934, at the Pennsylvania Railroad's Broad Street Station in Philadelphia, Pennsylvania. That name lasted until it became the "Pioneer Zephyr" as Burlington put other "Zephyr" trainsets into service as named trains.