The Nitro Combo from WOW is a new kind of deck tube. You can still
ride the Nitro Combo like a regular deck tube, lying down and holding
on. But if all that holding on is too much work, you can sit down inside
the secure cockpit seating built into the Nitro deck tube body. The
design team at WOW figured out how to turn the basic one-dimensional
deck tube into a multi-positional family fun mobile.