Good job! However, I would consider cropping the upper portion.
Great eye! It reminds me of the concept of the Russian toys that stack inside each other. Agreed with Richard about cropping heavily at the top.
Sergio, another good shot. I'm in agreement with the others about cropping the top; maybe where that boxed beam or duct work meets the ceiling (in any case, that dark area on top). Until you get into it, street photography seems so simple. As for the title, I might have gone with Gen 3.0 Good shot regardless.
Very clever catch, Sergio ... I wish it is my shot. 'Still have to learn how to think on my feet. I envy you people who can do it quick.