The extra compressor could be run while driving(if the control didn't have to be hooked up) allowing one to use both compressors to fill the OBA tank and the warn tank so tires could be aired up faster. It would just be a dual compressor setup to provide more volume. Creature comfort that wouldn't work because of product limitations, and cost!
Mindset wasn't directed at you or that law on particular!!!! It was directed at society as a mass.
The difference between stupidity and ignorance. Ignorance is doing something wrong and not knowing better. Stupidity is knowing better, but doing it anyway. Don't be stupid!