Post Office Telegraph detailing a car's high mileage achievement during a world record attempt.
| Identifier | ExFiles\Box 39\1\ Scan166 | |
| Date | 24th October 1924 | |
| heavy car have now exceeded nine thousand miles running at average speed of fifty miles per hour distance covered approximately five hundred miles per day this is a world's record | ||
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).