Personally I'm a little skeptical about a Healthcare X Prize that is sponsored by Wellpoint, (does it not follow that a giant for-profit healthcare provider would primarily be motivated to discover ways to become more profitable?) but after watching the Peter Diamandis "Why design a Healthcare X PRIZE?" video I'm at least convinced that the experiment could provide some very valuable information.
The idea is to pick five teams that will compete in providing healthcare to test groups of 10,000 people each over a period of three years. The 'winner' will have garnered the best quality-of-life score from their group. Let's hope at least that there will be a Single-Payer team in the competition. Certainly the Healthcare X Prize provides an arena in which advocates of Single-Payer can show their stuff.
.