Trevor Fishlock meets transport enthusiasts dedicated to keeping alive fascinating vehicles of yesteryear.In Barry, he finds Cardiff Transport Preservation Group where for 25 years club members have been renovating buses from down through the decades.He also looks back on meetings with a dedicated bunch who are doing up old trolley buses which once served the people of Cardiff.And, in Blaenavon, he heads back to the age of the steam railway with Pontypool & Blaenafon Railway Company.