Square Wheels

If your bicycle had sqaure wheels how useless would that be!!
Well not entirely useless, in fact, it might come in handy sometimes.

http://www.sciencenews.org/articles/20040403/mathtrek.asp

This articles shows you how a bike with square wheels is a great success on a particular roadbed.

What I Would Do With This

This makes me think that sometimes we reject an idea outright. Square wheels indeed, how stupid! And that is the end of the idea. But sometimes an idea isn't presented for the particular problem it can overcome.

These square wheel bicycles can come in handy when the terrain is rough and bumpy.
So never rule out a solution, just because you can't immediately see how it might be applied.