 The mayor of the newly-created Cambridgeshire and Peterborough Combined Authority, James Palmer, made the introduction of a light rail scheme, partly running underground, a priority on his election in 2017.In 1950, a city plan for Cambridge was published.Chaired by Sir William Holford, an eminent architect and planner, it proposed a set of changes which a relief road for the centre of Cambridge, which would have destroyed terraced housing and other areas.