A whole big bunch of really cool custom cycles bi- and otherwise

TPP has a fascination with bicycles, well, cycles of all sorts, and here's a link to a photo essay of some really cool custom cycles of all sorts.  You have to admire some of the ingenuity, some of the silliness, some of the cleverness involved.  Here's just one to get your curiosity aroused, a pedal-powered tank.  Watch out neighbors!  You know this could save the military a lot of money and improve the fitness of our troops.  Thanks to Treehugger for the link.