The entrepreneur who founded and grew the largest startup in the world to $10 billion in revenue and got fired is someone you have probably never heard of. The guy who replaced him invented the idea of the modern corporation. If you want to understand the future of Tesla, and Elon Musk’s role in it — something many are keen to do, given the spate of negative headlines about the company — you should start with a bit of automotive history from the 20th century.