From ZZZ online comes these two images of a skater being driven by some sort of half-motorcycle.
I dunno. I don't think this is a step forward. I've done a lot of inline skating in my day. The problem with this beast is that, while it looks like a lotta fun, inline skates are prone to trouble over bad surfaces. You hit a minor little ridge going 40 mph, and your face is gonna be turned into hamburger.