These guys are very skilled and knew exactly what they were doing on this road which they probably took about a gazzillion times. It's a different country (I am guessing Greece), with a different culture, and different tolerances for what drivers expect from bikes. They took just a few chances. However, most of the time they crossed into the opposite lane while having a good view of the oncoming traffic (mostly on right handers). On lefthanders it was a bit iffy, but they were confident they can back in quickly. Sharp execution plus some good old fun. I've probably ridden a number of times at half the level of what they were doing when it felt right. It's a different mental state. You are in the zone, you see and anticipate everything, you become the machine.