AND exceptional leadership, professional attention to detail, keen negotiation, a clear vision to the goal -- plus reckless growth.There doesn't even have to be any breakthroughs. Tesla has shown that just economies of scale, smart vertigal integration, and the current modest rate of yearly improvement has been enough to do it. They are making competitively priced cars with healthy margins.
In other words, just solid business sense and good execution.
Oops, was that the secret recipe?