Yes, there may be many technical problems to overcome, but the video shows a perfectly workable solution and it's the best approach I have seen to the ancient door technology we have carried over from the Model T era.
The solution that I had been working on was something similar to the doors on the Starship Enterprise that would whoosh open horizontally.
However, with more limited space to work with, the door panels would have to telescope into each other to fit on a car chassis.
Frankly, I am puzzled as to why no auto company had done any serious work on developing more modern doors.
Granted, the DeLoren had an interesting concept, but it looked more like primitive cool to me rather than a truly modern design.