Announced on 23 September 1949 the new Rover 75, now the only Rover in production, was first displayed at the opening day of the Earls Court Motor Show in 1949. It featured unusual modern styling in stark contrast with the outdated Rover 75 (P3) it replaced. Gone were the traditional radiator, separate headlamps and external running boards. In their place were a chromium grille, recessed headlamps and a streamlined body the whole width of the chassis.
The car's styling was derived from the then controversial 1947 Studebakers. The Rover executives purchased two such vehicles and fitted the body from one of them to a prototype P4 chassis to create a development mule. In James Taylor's highly regarded book 'Rover P4 – The Complete Story' he advised that this vehicle was affectionately known as the 'Roverbaker' hybrid.