More seabussers

The point of public transport is to provide victims - oops, I mean "models" - for surreptitious portrait drawing.  Here are a few attempts, mostly two per 10-minute trip.  They are all in water-soluble ink, with a wet brush used to draw out some shading.  You might be able to pick one or two of them out of a police line-up - better than I used to do...