Some years ago I came out of a side-street near where I worked onto a not-busy connecting road, both fairly flat and quite straight. Checked both ways before turning left, went round the corner to find a motor-cyclist skite past. I *know* never saw anything before I turned - the only explanation was that he was almost impossible to see because he was in 100% black leathers.

And I bet he was wondering how I didn't see him, too.

Wade.