If you have a look at their whitepaper, p.19 (https://parkgene.io/) they say that they’re going to target a number of cities, in their effort to expand internationally.
Athens will come first in their list because they want to leverage their existing 50000+ customer base. England, with Manchester and London, is also an “easy target” in the sense that Airbnb has already paved the way for a P2P mentality. Russia will be targeted as well, as Parkgene believes the level of cryptography engagement there is already high. Expansion plans include other European countries such as France (Paris, Marseille), Spain (Barcelona) etc. and go as far away as Japan. And we must not forget North America whose parking market size and levels of spending is very important, with cities Chicago, LA, and NY needing desperately some extra open parking spaces.