Ford explained that the cylinder block was made in England, the carburetor in Ireland, the transmission in France, the wheels in Belgium, and so forth.
My mind is free when I'm washing a car or tinkering with a carburetor and when the job's done I have the pleasant sensation of having accomplished something.
Perhaps you have heard rumors about a new carburetor suppressed by the gasoline companies, or a new food source concealed by the great food suppliers, or a new synthetic hastily destroyed by the cotton-owning interests.
Old cars have carburetors; new cars have fuel injection systems. These are the things that control how much gas is burnt, and how much air mixes with the gas to get the proper amount of burn.