Those of you with a really good memory, and a passionate love of all things Porsche, will remember the Carrera GT featured in the first promotional video, released a decade and a half ago, was slightly different from the final production version. This is that very car, the 2000 Porsche Carrera GT Prototype, driven by Walter Röhrl in that clip.

This car is one of the only two early Porsche Carrera GT Prototype models built as demonstrators before the project was green lighted for production, and the only surviving unit. So you’ll notice it has larger headlights than the production version, unique engine cover and tailpipes, and a totally different interior which we think is way cooler than what we got on the finished product. As for the engine, while it is the same race-bred V10 unit, it has 558bhp whereas the production model had just over 610.

The 2000 Porsche Carrera GT Prototype has an interesting backstory as well. The car was purchased in 2007 by Jerry Seinfeld, who is a massive Porsche fan, directly from the factory. Recently though, as you may have heard, Seinfeld sold a whole bunch of his Porsches, including this one-off. Luckily, the GT Prototype ended up in good hands as Mr. Bruce Canepa bought the car from Jerry and added it to his magnificent collection of rare exotic and vintage cars which also includes a bespoke McLaren P1.

Check out the detailed shots of the prototype GT below and see how many differences you can find between this and the production model: