The four Flxible Metro-D buses Ride On had in its fleet were originally powered by Liquid Natural Gas (LNG) and were operated by the Maryland MTA. Upon their arrival in Montgomery County, they were repowered with diesel engines and then assigned to the Gaithersburg garage. They had more seats than any other Ride On bus model, and as a result, were frequently assigned to Route 70, where Ride On management prefers not to have standees for that route's long express segment on I-270.