Soft Window Targa: 1968 Porsche 912 (opens in new tab)

What is so significant about a window that it makes a car incredibly desirable? Well, in the case of the rare "soft window" Porsche 912 Targa, it's because this concept of open air motoring was short-lived, but not because it wasn't a hit with customers. The soft window was almost like a test run of...