Arizona's largest school district, Mesa Public Schools, has purchased 61 additional propane autogas-powered buses, bringing its autogas-fueled fleet to a total of 89. "We plan to keep coming back for more until we are 100 percent propane-powered. These propane autogas buses have surpassed our expectations in how smooth and effortless they run and how easy they are to service," said Transportation Director Ron Latko. "We are fortunate to have bond funds for this purchase. But moving forward, the funds for new bus acquisitions will come from the unbelievable fuel savings we experience from our existing propane autogas buses," he said.