Some day gas and crude oil will be a thing of the past. With innovations here and there. In your own opinion what will replace gas and crude oil in the international market.
It's common knowledge that electric cars and vehicles are starting to flood the world market with growing concerns about global warming which is caused by the activities of humans which crude oil is a major contributor to it because gas , fuel, gasoline are by products of crude oil.
I think that in the next thirty years to come no body will be talking about crude oil again because more environmental friendly vehicles will be introduced into the market