Truth be told, the de minimis improvements made over the last century with the standard "safety" bike aren't enough for me to get excited about. The extra few seconds over 40k between a "vintage" lightweight and an all new super-duper-carbon ultrabike are only of interest if :
1. You're racing, and;
2. You're stuck with UCI rules for the race you're in.

Wanna go fast? Get a velomobile.