Happened [1] after 1250 (or so) drives. As seems to happen in these situations, I got very close to the supercharger. So close, that I convinced a passerby and a policeman to push my car the remaining 200 yards to the charger.

Not going to do that again... heh. I sold my S70D.

1. https://news.ycombinator.com/item?id=28629060