CAD Car was looking for a magnum opus project and, after hearing that The Bugatti Trust had most of the plans for Bugatti cars, arranged a visit. It was not expecting too much, but the Trust was swept up in the potential of this mad idea. After initially buying some plans from the Trust, it shortly agreed to supply the plans for free. After some years, with the scope of the project expanding through the necessity to include 3D laser scanning of the Beaulieu Museum Lyon GP car, parts delivered to be converted by traditional methods and much else, the car became an incredibly complicated design jigsaw to complete. On completion, however, there is now a record of how the car, in 1924, should have been. Reviewing the momentous task of this self-imposed project, CAD Car’s feelings are that details such as fuel tank locator information, wheel treatment roughcast and not polished and items such as cross member painting will help existing cars be converted back to correct versions if required. Yes. Most are wrong, but happily still exist. Preserving history was the goal and having gathered the information the few remaining early cars can revert to original if the owners require.