For me the GT1 homologation era has been the epitome of the high performance automobile thus far. These were actual race cars that had been converted for road use, and they make the hypercars of today seem like shallow status symbols. You actually need a decent amount of skill to drive a McLaren F1, a Mercedes CLK GTR, or a Porsche 911 GT1 at all, let alone quickly.
This video from The Supercar Driver shows us a collection with all of them, as well as a glimpse into the ultra-exclusive world of trading automobiles at the highest end.
-Nick