It was a flashback to the 1960s. Vintage ‘60s-era Porsche cars cruising the 2.52 mile course at the Sonoma Raceway for the Classic Sports Racing Group Charity Challenge. The Sixties were a time of transition for Porsche. From the end of the 356 line to the beginnings of the 911, the cars from Stuttgart took on a new style between 1960 and ‘69. Already a Member? Sign in to your account here and Refresh this page to access your content!