I got this pic from one of car journalist who went for the opening of Porsche Museum in Stuttgart. According to the spec this is 1959 911 prototype. 911 came out around 1966 and proto was introduced around 1965 so, this was done 6 years before that. This pic shows pretty much all the detail for the 911 was done at this time already! This got a bigger rear seats but I am glad Porsche did not pick this as design direction.