June 27, 2019 – Tomorrow, the new expansion of the Z. O and O express will open to the public for the first time. The expansion was made possible by a gift from the Howard G Buffett Foundation and includes a new engine for the train as well. The ride, which extends between the Zoo and the children’s museum, is the largest upgrade to the zoo train since it’s installation in the 1980’s. The cost of the new extended ride will be $3.50. To see pictures of the from the VIP preview party for the train, check out the photos below!