Well, nothing really, Lloyd. Technically, I suppose the MINI that I've got on order has succeeded it, but not replaced it.
I also have a BMW-Alpina B5 Touring, but that was more a replacement for the BMW-Alpina B8 4.6 Touring I had beforehand.
With 2 small kids and living in London, I just found I was never actually going to be able to use the 8er much. A great shame, because it was the car of ours to which my wife and I have been most attached over the years, and it was in pretty much mint condition, too.