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).
Record of a road test run to Crewe and back, detailing distance, petrol used, and petrol consumption.
| Identifier | ExFiles\Box 98\4\ scan0171 | |
| Date | 15th March 1941 | |
| 400d 9-B-V Run to Crewe and back 15.3.41. Distance: 146. Petrol used 8 galls. 5 1/2 Pts. Petrol consumption 16.8 M.P.G. | ||