The article claims that 1 Kg of plastic produces 1 litre of "oil" worth $1.50, and it only costs $0.20 worth or electricity. Well, $1.50 per litre works out to $238 per barrel (42 USG), about 3 to 4 times the going price for high-quality crude oil. And I can assure you that the "oil" this device produces is NOT identical to a finished lubricating oil you could actually sell for $1.50 in a gas station.
So, the energy cost of 20 cents to produce a product that MAY be worth 50 cents or less. Now, how about the cost of the original equipment? And the cost of acquiring and sorting the waste plastic to feed into the machine? Add in other costs. Does this still look like economically viable?
I'm not saying this is a lousy idea. It's one of many versions of how to recover plastics and convert them into useful materials, rather than landfilling them. But the article is so far from the real world it qualifies as a "fluff piece", not news.