It is possible to use very little oil for the energy of manufacturing. Most manufacturing processes require electricity, and it&#x27;s possible to general electricity without oil.<p>In fact, in the U.S. most electricity is generated from sources other than oil. Unfortunately, a lot of it comes from coal, which is worse than oil in almost every environmental aspect. But theoretically the electricity could all come from solar, wind, hydro, and nuclear.<p>Cars have of lot of plastic in them, and oil is the main feedstock for the manufacture of plastic. But that&#x27;s not really bad in terms of global warming, as a lot of the carbon remains locked up in the plastic (as opposed to burning oil).<p>The final piece of the puzzle is transportation--cars are not built all in one place, the subassemblies might be manufactured all over, and then come together for final assembly via rail, boat, truck, even airplane. Each of those burns oil, so that&#x27;s a big part of the oil footprint.