Enjoying reading ’Master Modeler, creating the Tamiya Style’, a book I picked up at the Tamiya store in Tokyo.
Mr. Tamiya bought an actual full size Porsche 911 in 1976 to get accurate scale reference to build a great Porsche 934 model. The project went well over budget and the mould cost several 10s of million yen. The resulting model was superb but didn’t sell brilliantly.
One day, noticing an accounts employee in the car park, had added a motor and batteries to a F1 car model - he had the idea. Why not repurpose the Porsche model as a Radio Control car to try and recoup the expensive production process. The resulting RC Porsche sold very well.
On a later trip to California Mr. Tamiya saw the dune buggies that were popular in the 70s and decided they would make a great basis for even better RC cars.