Another skateboard stairs concept reaches reality. Though featured on Recyclart, those are clearly all new skateboards, and kind of crappy modern Kryptonics if I’m not mistaken. The metal supports are a custom fabrication.
Addendum: I was looking at the Kryptonics web site, and they have a little page bragging about being around the original Burnside skatepark! There are some weird illustration/caption combos in their timeline.