Andre,
I don't know for natural gas, but refining oil takes about 10% of its energy content so for the US that would be about 4% of total US energy use. If you add in refining losses and the cost of distribution, building refineries and service stations its probably another 15% for a total of 10% of the entire US energy budget, and would guess that its about the same for the rest of the world. I would say that's a significant energy use, considering its only delivering 30% of total energy. Hydro and wind energy probably have the lowest embedded energy costs of renewable energy(1-5%).

Now you are presenting an article about mineral availability so you should present some numbers about energy use, especially those critical metals such as copper, neodymium, tin, uranium, nickel,......

The comparison of an electric vehicle(RAV4EV) and an ICE(RAV4) is comparing almost identical vehicles so the infrastructure for manufacturing is almost identical. There may be constrains in availability of Lithium, Nickel, Copper, not present in an ICE vehicle .. but unless we have a number for energy used to produce these metals its hard to know what the constrains will be.