SACRAMENTO, Calif. -- A children's ride at the California State Fair will soon run entirely on cow manure, and despite the likely bathroom humor, fair officials said it's a great step forward.

Pacific Gas and Electric Company and developer BioEnergy Solutions will power the "Barnyard Animal Train" ride with renewable biogas, made from state dairy cows, reported Sacramento TV station KCRA.

Children will have the chance to take a ride and learn to be environmentally conscious, fair officials said.

"Powering a children's ride at the state fair with biogas is a celebration of the great efforts of California's dairy farmers to help us meet our energy needs," said PG&E Vice President of Gas Transmission and Distribution Robert T. Howard in a news release. "We're proud to partner with these innovative dairy farmers and demonstrate the potential for the state's agriculture and power sectors to work together to meet California's climate goals."

The ride will gear up Friday and will last until Labor Day.