Cool picture. From what I gather they did not use a viral vector here? It mentions nanoparticles. I also wonder if there were any adverse affects among the animal tests too.
Free market capitalism inevitably leads to monopolies. Political economists wrote about this in the early 20th century; have a read of "Imperialism: The highest stage of capitalism" sections 1-5 are most relevant but the rest is also.
Because Cuba is not often a major player in world events, like Russia and the PRC are currently. Cuba is involved in quite a few discussions in communist theory. I also don't really see what you mean regarding idolizing, they just have quite a different viewpoint.
Any communist/Marxist literature :p Maybe have a browse around on ProleWiki. I would also recommend Socialism: Utopian and Scientific by Friedrich Engels, because I think it does a good job of explaining the basics in the last chapter (but the first two are worth reading too). For something less theoretical that just tells it how it is right now, I would recommend "Confessions of an Economic hitman", which exposes the meddling of US imperialism around the world (including politics)
Most of the Marxist literature can be found on Marxists.org
I would think a truly circular economy would not involve the manufacture of new cars in the first place