As I was inking the drawing of the Citroën HY an idea popped up in my mind about how that vehicle could be used. It can basically be used for almost any kind of work. For instance delivery of goods or transporting people from one place to another. Or, as I sketched above, a tool for two brothers working in the publicity industry. It was great fun making this. For me, not for the two brothers, who aren't having a good time at the looks of it.
Anyway, I can see some elements that aren't quite right yet. Some things are out of proportion or missing. There's a lot of work to be done. I'll post the drawing in a couple of days/weeks when its ready.