I can’t begin to imagine how it feels to ride a six pound bike. On the one hand it would feel like you weren’t riding anything at all. On the other hand it would feel like you weren’t riding anything at all.
The brakes are AX Lightness (130-145 grams the set, depending on model). The crankset, including bearings, is 281-grams. The AeroLite Lite Pedals weren’t Lite enough, so they have been drilled to further reduce weight. And the wheels? According to Rico de Wert, the builder of the cranks, both wheels together weigh just 585-grams. That’s 1.29-pounds for the pair.
I can think of better things to spend $45,000 on.