When was first car with moulded running boards...I think I remember a old article on valley custom doing this on a 1940 ford coupe...
I'm not very knowledgeable on this but my assumption would be quite a bit earlier since there were some pretty amazing coachbuilt cars of the 30s. It will be interesting to see how this thread develops - neat topic.
A great example of how to ruin a '40 Ford. However, back then it might have been considered "cutting edge".