Isometric parallel perspective assignment

We had to make an isometric drawing on the subject transportation, education or health.
I chose transportation as in gas emission in CO2 value, comparing traditional means
(for example cars) contra cows/animal farming and their devastating outcome.
Facts are from the documentary Cowspiracy: The Sustainability Secret​.

The feeling should be a bit vintage, since the message itself isn't new.
Colours were limited to 3, other than black + white. Enjoy ! ^^