 The PDR has two service stations for motorists , one at Cardiff West on the Capel Llanilltern Interchange and the other at Cardiff Gate on the Pentwyn Interchange . The services at Cardiff West includes <unk> petrol , a <unk> , Burger King , Costa Coffee and W H Smith , while the services at Cardiff Gate includes petrol , Burger King , W H Smith and also Coffee <unk> . 
