Rose Tree Media held a ribbon-cutting ceremony for its new fleet of 23 compressed natural gas school buses. Here are highlights from the event, including a CNG bus-themed cake.
PHOTOS: Pennsylvania district launches CNG buses

Rose Tree Media School District recently purchased 15 new compressed natural gas (CNG) buses and retrofitted eight older diesel buses to run on the alternative fuel.

Rose Tree Superintendent James Wigo addresses the crowd during a ceremony for the district’s new CNG fleet.

Abigail Pearse, captain of Penncrest High School's Envirothon team, addresses the crowd.

Wigo (right), school board President John Hanna (second from right) and other dignitaries take part in a ribbon cutting for the CNG buses.

Wigo; Grace Eves, the district's director of management services (who oversees the transportation department); and Hanna pose with one of the new CNG buses.

Wigo said that the district’s drivers "absolutely love the buses," noting that one of the unexpected benefits has been the quieter engine (which is at the rear of the bus).

The festivities included a CNG school bus-themed cake.

