What will we do if we run out of petrol, oil and water ?

we will be on bicycles.

Running out of gas and oil is a very definite and eventual possibility. Some day we will be dry. As for water, no we will never run out. The water may be undrinkable, but there will always be water. It's alot like gravity, equal and opposite forces. When you drink water, you pee it back out. Water that evaporates reaches the clouds, cools and drops as rain, as well, the ice in the Arctic/Antarctic is so dense it could refill the worlds oceans. going to outlast us.

Most likey we will be out maneuvered by a crazy like a fox dude in South America...so the oil and then petrol will be hard to come by if available at all. Hopefully enough anternative energy items are produced before then. And water will become mostly contaminated if we are not careful. I am on a well so my water situation is good as long as they don't pump it out of the ground or contaminate it elsewhere which would affect me. Hoping all things work out before they get all bad like it could.

Well if we run out of water we will ultimately die! And all other plant and animal life along with us! As for petrol and oil, it would cause a tremendous disruption to world markets, especially currencies like the US dollar. Funnily enough there was a time in humanity when there was no such thing as oil or petroleum to power the world. They seemed to get by and the world was a lot cleaner for it.