 As the puppets of Lady Penelope and Parker needed to fit inside , the largest of all the models was the seven @-@ foot FAB 1 , which cost £ 2 @,@ 500 ( approximately £ 46 @,@ 000 today ) to build . The Rolls @-@ Royce 's name and colour were both chosen by Sylvia Anderson . Rolls @-@ Royce Ltd. supervised the construction of the <unk> model and supplied APF with an authentic <unk> grille for close @-@ up shots of the front of the car . In exchange for its cooperation , the company requested that a Spirit of <unk> be fixed to the chassis and that the characters avoid referring to the brand with abbreviations such as " Rolls " . 
