OutRunner, the running robot

OutRunner is a robot capable of running with high efficiency. The Performance version has planned Arduino compatibility and will be upgradeable and hackable.

Check it out!
https://www.kickstarter.com/projects/138364285/outrunner-the-worlds-most-advanced-running-robot

Those pictures look really cool. I wonder how it would work with large wheels instead of "legs". Did you guys try that too?