Energy can neither be created nor destroyed, but can be converted. All processes of conversion involve a loss of some kind.
That law of Physics can not be undone by legislative or presidential fiat.
So, we need to know where the energy comes from to compress the air. Obviously not from air, as the headline implies.
What is the cost of the energy? What percentage makes it to the wheels of the car? How much leaks? What is the cost of government subsidies?
An engine compresses the air. Apparently the compressed air turns the wheels at a more efficient rate than the mechanical differential drive train.