Vertical Quad

[Richie Rich]

There are Quads and then there are 'QUADS'.
But here's a new twist....a VERTICAL Quad....

http://blog.makezine.com/archive/2008/02/quadruple_layer_bike_impr.html

Ride On.....

[SirJoey]

Hmmmm.... looks like a good candidate for my "Unusual HPVs" gallery, whaddya think?

[Richie Rich]

Sure...with the emphasis on "UNUSUAL"...!! :eek: