They will stop selling petrol/diesel cars in 10-15 years, but the will remain on the road. You also have industrial equipment still, ships, planes etc. And oil makes far more than just fuels.West to gulf and other countries, increase oil output as we want to stop consuming oil in near future. There is going to be radical shift geopolitics in next 10 years, gulf countries which were under US protection might themselves find under threat by west.
EU nations approve end to combustion engine sales by 2035 - Euractiv
The EU's 27 member states approved to end the sale of vehicles with combustion engines by 2035 in Europe, officials announced early Wednesday (29 June), marking a major victory in the EU's bid to reduce CO2 emissions to net-zero by 2050.www.euractiv.com
there is no stopping russian oil, even saudi indirectly use it.
Now Egypt Emerges as Major Supplier of Fuel Oil to Saudi Arabia
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Maybe not, but it can be reduced dramatically. Saudis have no need of it.