Mae Stagecoach yn Ne Cymru wedi ymuno â'n partneriaid yn Llywodraeth Cymru, Cyngor Sir Powys a bwrdd TrawsCymru er mwyn dathlu cyflwyno 12 o fysiau Volvo B8 MCV newydd sbon ar gyfer gwasanaethau T4 a T14.
"Stagecoach in South Wales has joined with our partners at Welsh Government, Powys County Council and the TrawsCymru board to celebrate the introduction into service of 12 brand new Volvo B8 MCV bodied buses for TrawsCymru services T4 and T14.