Don't you just love an empty city ;-)
I was warned about traffic in Athens as we arrived by car a few days ago. For me it was the end of a long vacation, driving on the wrong side of the road, still sick with pneumonia and a long drive the previous day.
But the traffic was very light and not at all crazy. Gotta love that :-)
Exhaust looks interesting. I'll check it out and see if I can join up.