5kg carbon single speed/tourer Blackbraid
I've just seen this very interesting concept on Awesomer. The PG Bikes Blackbraid. The whole bike is 11lbs/5kg, probably due to the snake like single stays on the back. It certainly looks the part and you can't beat the weight (can you?)
Sadly no idea about the price and the set up is single speed with a band drive that I have no idea about, and NO BRAKES! (if you like being a fixie douche in Premium Rush.). There is a tourer on their website but I can't tell what gearing is on there. Still I wouldn't mind that frame with a more regular road set on it. Blades spokes on the wheels, sweet.