Not sure, although it does seem to me that this documentary is incomplete...there are so many other models that were not mentioned during this video unfortunately.
Yes I know, like the Alfa 90 which was the first computerized Alfa ever built, and then the rest of the transaxle versions which made a BOOM like the GTV6 and 75...
Only thing I noticed is that those might be shown in other vids, shows, museums , but never the Sprint .... :/
The video is focusing on historic models. The sprint is not a historic model. The historic model was the sud, because of the appearance of the flat engine, the front wheel drive, and the suspension/roadholding/relative low cost etc etc. Based on this historic model are the sprint, A33 etc etc...