Elon Musk, putting his money where his mouth is. You gotta like that.
The Tesla founder was responding to a challenge from billionaire entrepreneur Mike Cannon-Brookes, who wanted to know whether the company was serious in claiming that it could end blackouts in South Australia quickly. "Tesla will get the system installed and working 100 days from contract signature or it is free. That serious enough for you?," Musk wrote on Twitter.