Moderator note: Thread title edited to add a fact. Tesla prides itself in not needing to resort to conventional advertising to get the word out about their products. The glass demo, while not great news, is still news that many news outlets will create buzz about. I doubt that Franz had that much adrenaline going through his system. *edit: had the steel ball gone through the window, it'd be a different story, and cause a safety concern. but it didn't.