Summary:

The Covid-19 epidemic, apart from being a scourge, was also an experience for the whole planet of a new way of life that even for a while, even if necessarily, made us live differently than we were used to, at least in recent decades.
A "positive change" of this pandemic was the image of big cities in terms of pollution, lack of traffic congestion and the stress created by life in big cities, as in Athens.
The bicycle as a key protagonist in this change, due to its characteristics, showed during this lockdown, that it can be the solution to a series of problems of the modern.