Soes anything exist that is smaller than a pushchair, that children can be transported on?

[LynetteScavo]

Possibly standing up? Am I making sence?

I'm sure Phil and Teds did something like this once, but don't seem to anymore.

eh? I don't get the Smart Buggy at all?

What benefits does a buggy thats had 2 wheels removed actually have?

I'm serious -I don't get it.