They've followed the plan well. I'd also like to point out a lesser known article from 7 years ago: <a href="http://money.cnn.com/magazines/business2/business2_archive/2006/09/01/8384349/index.htm" rel="nofollow">http://money.cnn.com/magazines/business2/business2_archive/2...</a><p>The New Power Play<p>The Investor: Elon Musk, co-founder, PayPal<p>What he's backed: SpaceX, Tesla Motors<p>What he wants now: As Musk's two most recent investments - in a space rocket and an all-electric sports car - suggest, the 35-year-old entrepreneur likes to think big. So he's intrigued by the promise of a next-generation battery called an ultracapacitor, capable of powering everything from cars to tractors. Unlike chemical batteries, ultracapacitors store energy as an electrical field between a pair of conducting plates. Theoretically, they can be charged in less than a second rather than hours, be recharged repeatedly without sacrificing performance, and far outlast anything now on the market.<p>"I am convinced that the long-term solution to our energy needs lies with capacitors," Musk says. "You can't beat them for power, and they kick ass on any chemical battery."<p>Musk would know: He was doing Ph.D. work at Stanford on high-energy capacitors before he helped get PayPal off the ground. At least one startup, EEStor in Texas, and a larger company, Maxwell Technologies in California, are working on ultracapacitors. Yet Musk believes a university-based research group has an equal shot at a commercial breakthrough, since universities are where the most promising research is bubbling up. "The challenge is one of materials science, not money," Musk says.<p>The team to pull this off, he says, would need expertise in materials science, applied physics, and manufacturing. Musk wants to see a prototype that can power something small, like a boom box. "Make one and show me that it works," Musk says. "Then tell me what's wrong with it and how it can be fixed."<p>What he'll invest: $4 million over two years for a working prototype<p>Send your pitch to: mbb@spacex.com. -- M.V.C.