Sam, you are absolutely right about that! They may well be the kings of the maniacs in Europe!
We were going from Athens airport to Syntagma square, where we'd then catch a cab down into the Plaka (city center, no car zone - just below the Acropolis). We were in an accordion bus doing ~ 80 mph.
The ride back to the airport at the end of our trip in a 550/560 Mercedes at 5:30 a.m. was equally nuts. Mind you, The Athens airport is outside the city. When I looked over from the passenger side front seat, we were doing 135-140 kph. Driver looked over and smiled. Meanwhile, halfway to airport and still O'dark thirty, a Porsche and Beemer were out to play and passed us like we were standing still. Those Greek phugggers are crazy!