The addition of the Grand Canyon Diorama in 1958 prompted changes to the "Retlaw 2" freight train pulled by the DRR's No. 1 locomotive, which involved adding side-facing bench seating pointed towards Disneyland and red-and-white striped awnings on all of the cattle cars and gondolas. The walls on the cattle cars facing the park were also removed to allow for better views of the diorama. That same year, a third gondola with the same modifications as the other gondolas was added, and a fourth gondola with the same attributes was added in 1959. This brought the total number of freight cars in the train set, now referred to by Disneyland employees as "Holiday Red", to eight. Prior to these modifications, the cattle cars and gondolas of this train set had no seating, requiring passengers to stand for the duration of the ride. Despite safety concerns voiced by Ward Kimball related to the lack of seats on these train cars, Walt Disney, for the purpose of authenticity, had insisted that there be no seats on them; he wanted the passengers to feel like cattle on an actual cattle train.