First they came for the lead,
and I didn’t speak out because I didn’t want to breathe lead.
Then they came for the gas mileage,
and I didn’t speak out because I didn’t want to breathe exhaust fumes.
Then they came for the particulates,
and I didn’t speak out because I didn’t want to breathe particulates.
Then they came for my car
and there was nothing left for me
but to live a sad, miserable, poor, unhealthy, freedom-deprived “green” life.

In Italy (presumably, elsewhere too) unleaded gasoline comes from green nozzles. The color was chosen at the time to indicate it was an environmentally friendly kind of gasoline. Try explaining that to a contemporary greenie??