Oops, I've bought another leggy old Alpina

I recently acquired this slightly rough-around-the-edges 2004 Alpina Roadster for a more than reasonable sum.

- ALEX WOLSTENHOLME

I spotted a vague, pictureless advert on an online forum and my interest was piqued. Could it be a mystical BMW Z1-based Roadster Limited Edition? I mean, it could have also been a Z8-based Roadster V8, but as it was listed for five figures, that seemed unlikely...