Supply of four CNG buses in Valladolid, Spain November 1, 2019 | Europe Tenders Country: Spain Organisation: Autobuses Urbanos de Valladolid, S. A. (AUVASA) Description: Bids are invited to supply four buses fuelled by compressed natural gas. The estimated value of the contract... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password