The article suggests that the fuel is made completely on site (on the roof of the vehicle) from discarded plastic chips from a neighbor's business. But some numbers do not add up.

  > Making 1 liter of diesel requires burning 1 kg of plastic, which results in 2-2.7 kg of carbon emissions.

Does that number (1 kg) include the plastic consumed in the burning process, whose heat is then used to define (opposite of refine) the plastic back to liquid? How does 1 kg of plastic contain 2 kg of carbon? Or is the O2 in CO2 so heavy that "carbon emissions" weigh significantly more than the source hydrocarbon?

  > Second, there is the combustion of diesel fuel while driving, which emits 2.7 kg of carbon dioxide per liter.

Same question.