What can we learn from Bertha Benz?

I recently read a blog post by Dave Trott and was blown away by the story of Bertha Benz and the role she played in the wide-spread adoption of motor vehicles. You can read his post here. The story, in short, is as follows: Karl Benz built his internal combustion engine based vehicle (3 wheeled) and was continuing to iterate to try and make it perfect, without being able to sell them. Bertha at one point in time lost her patience with this continuous tinkering and decided to take things in her o...