Taxi Free traffic space

Last week, during my trip in Athens something very unusual has happened. Taxi drviers disappeared from the traffic! No, they were not sent to somewhere by molecular transportation. They went on strike!
To protest working condition and taxes, they did not work one day last week. I think many drivers were happy even for one day :) However, not all of them were not unhappy with the conditions; some of them took out their taxi sign on top and worked while other taxi drivers were on strike.
The only thing I was missing, I should have picked up the Mercedes S350 taxi ;) The Mercedes in the picture is E Class, S is even bigger!