This 1936 Ford Cabriolet was originally owned by Henry Ford. You won't believe this story! Go to You Tube http://youtu.be/KKPNoBQARko '36 Ford club cabriolet- originally owned by Henry Ford. Let me know what you think.
Cool car. Great story. The empirical evidence that you have, proving it was Henry's car is priceless. I would suggest swabbing the front seat and having it DNA tested. You should be able to identify HF's farts, further addding to the historical provenance.
Is this the video in question? http://www.youtube.com/watch?v=KKPNoBQARko I don't see any evidence to indicate it was owned by Henry Ford. Unless there was a clear paper trail that showed all owners all the way back to the Henry Ford, I'd be extremely skeptical.