Diesel Gate perspective according to Nietzsche's philosophy

So, we are well aware of Volkswagen DieselGate Scandal, i cannot really relate the matter according to Nietzsche's morality and will to power theory. Does Martin Winterkorn in this case has master's morality and the customers, slave morality? In slave morality, people already know how the ruler or master is an evil but in this case, they got to know after the scandal was public.

Or can we relate this concept of morality in a different way?