You can still manually change gears in a gtr, just without the use of a 3rd pedal. I do not understand why the use of said 3rd pedal makes the difference between a true drivers car and a car that just drives itself. Driving a stick is not too much harder than an auto, yes it requires more skill, and yes the lap time would be lower, but not significantly lower. I do agree that the gtr prob does not go that fast around the ring, but to say that it's lack of a 3rd pedal allows it to drive itself is a bit excessive.
And if you were simply referring to the electronic driving aids in the gtr, porsche's offer much of the same in their cars as well...
I think your personal love/admiration for porsche has clouded your judgement on this topic.
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