This is really pointless

[original_aj]

It doesn't offer any advantage I can see other than looking wierd. For smooth surfaces only!

Comments

[figg.livejournal.com]

It looks like the front pair of wheels can yaw/pitch.

So you can get up pavements with less effort, I assume.

[gflinty.livejournal.com]

but the individual wheels are so small you'll just bounce off the kerb :P