From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Number of experimental cars on the road and requesting figures for production test cars.
| Identifier | ExFiles\Box 123\4\ scan0014 | |
| Date | 8th November 1930 | |
| X180. W/S. Tr.{Capt. F. W. Turner - Finance} From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}5/MJ.8.11.30. With reference to Tr{Capt. F. W. Turner - Finance}15/N7.11.30. In certain circumstances it is possible for seven or eight Experimental cars to be on the road at the same time with their respective drivers. We suggest that you ask Mx.{John H Maddocks - Chief Proving Officer} for his figures for production test cars. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||