I'm a huge fan of race-dezert and all off road and sand car fabrication so it's hard to top that one.
The audio installation this guy builds is absolutely amazing. The molds he makes and way he does carbon fiber is amazing, but most of all the aluminum pieces he makes with only a router. I can only imagine what he would think of with a CNC machine.
http://www.stevemeadedesigns.com/boa...howtopic=57269