In 1948 and 1949, the "Pioneer Zephyr" was temporarily removed from service to participate in the Chicago Railroad Fair's "Wheels A-Rolling" pageant. The fair's purpose was to celebrate 100 years of railroad history west of Chicago, and the "Pioneer Zephyr"'s role in the pageant was to highlight the latest strides in railroad technology. It resumed regular passenger operations when the fair ended on October 2, 1949. By 1955 the "Pioneer Zephyr"'s route had been updated to run between Galesburg, Illinois, and Saint Joseph, Missouri; the trainset had been in continual service since 1934, operating over nearly 3 million miles (4.8 million kilometres). The "Pioneer Zephyr"'s last revenue run was a trip from Lincoln, Nebraska, to Kansas City, Missouri, (along the train's regular revenue route) that then continued to Chicago on March 20, 1960. When Amtrak took over passenger rail services in 1971, the legendary "Zephyr" name was preserved, and the "California Zephyr" is an Amtrak route in the 21st century.