OK this is just for fun, but what in the world are these? They are called velocity stilts and I even think I saw something like this in the closing ceremonies of the Olympics.
Check out this running form!
I think that this person really needs a helmet. Maybe this will be a new way to do high-jumping!
According to this site that gives more information you can run over 20 mph using these things!
But the running can look a little awkward!