Generations -60198 and my 7715 from the 90s (with alternative drive)

So the kids got 60198 for Christmas, which was a great opportunity to assemble my old 7715 and its tracks (which I got for Christmas back then). 7715 was a huge deal in Hungary in the early 1990s, my father traveled to Vienna for it. I was reading the motorizing possibilities in the instruction as a child but never got to it. Now, >30 years later I was amazed to find that the current power functions motor fits as has the same size as the old 9v engine. Respect, Lego, now my old train can...