I imagine that increased sales of EVs at the moment won't have a large impact on the oil price because they're still a very small percentage of the market; but when they make up a significant percentage, that will affect demand and reduce the oil price, assuming all else remains equal, such as the level of supply of oil. It might become a bit of a tug of war: high oil price leads to more people buying EVs, more people buying EVs leads to low oil prices... I think we know which side will ultimately win the war, so that probably means low oil prices in the very long run.