Holy crap, Batman! I love this sink! My friend Monica sent me this link last week and I've been drooling over it ever since. Recycled tires turned into sinks? Brilliant.
The rubber from the tires is melted down and cleansed of debris, and the tiny inherent metal fibers that give a tire its road resistance are then formed into a sheet. This sheet is stretched over a base frame—made of wood, metal, or any other material out of which bathroom furniture can be fashioned—and anchored down by the drain collar. This creates a shallow-sloped surface for water to be siphoned away, but not a clunky profile; in fact, the material used is so minimal that, the manufacturer claims, the sinks use less than one pound of rubber.
(via architect magazine)