The De Diego car was a unique, homemade vehicle, meticulously crafted by Gerardo de Diego, a 29-year-old bodywork and boilermaking expert from Burgos, in the early 1960s. Over the course of two years, De Diego built the car in a small workshop, drawing on his eight years of study and experience in mechanics. The result was a striking red sports car with sleek, aerodynamic lines, a low roof, and a convertible design that incorporated the modern…