Finally got to opening it. And it is very impressive. The entire packaging is incredibly smooth and well thought. How the two hefty manuals represent front and read half of the car, how they seamlessly blend into the lid, how flaps of the three boxes with pieces overlap to show a photo of a real P1, with a photo of the Lego model 1:1 underneath.
Putting a single bag took me an hour, but I also didn’t rush. This is the most complex Lego set for me for sure. There are parts that have to be left loosely hanging until later, and the way everythinng is held together is not so much by clicking it, but with using pins.
https://www.bricklink.com/catalogList.asp?catType=P&catString=139