it true that petroleum will run out in 55 years maximum, how should solve this issue we have not find any alternatives yet?

It will NEVER run entirely OUT.  Only get more and more EXPENSIVE until a NEW source of power, that is cheaper is developed, and we will switch over.----It is the way it has always been.     WOOD, then Coal, then oil, . . .    Don't believe the fear mongering--Its only to con you.  They said the same thing 50 years ago--THEN they said 20 years!

Reduce demand by killing a lot of people.

Oh, wait.....

Proven alternatives already exist. E.g. since 2018 OBB (Austrian Federal Railways) have been obtaining all their traction current from renewable sources. All main lines and even many rural branches are electrified there. OBB are currently testing battery powered trains to replace their remaining diesel passenger services, and their next goal is to run all their stations and depots on sustainable power as well as their trains. They envisage a wholly carbon neutral railway by 2050.

https://www.railtech.com/policy/2019/07/24/green-r...

https://www.railjournal.com/fleet/obb-battery-elec...

affordable petroleum will run out. I cannot predict when exactly

We keep finding new reserves so I don't think we can put a date on peak oil. Fracking has opened up trillions of barrels of new oil.

I also think we will have technology in 20 years which makes the internal combustion engine obsolete.  It will go the way of the steam engine.  Electric cars with their highly flammable lithium batteries are just crude prototypes.

In the 1960s, environmentalists predicted it would run out in ten years. This is just another absurd hoax. 

We have alternatives, but that isn't where the money's at just now, not a low cost production and no high profit margin

Why do you think there are no alternatives? In Europe the sale of electric cars is increasing exponentially.

People were saying that back in the 1970's but it didn't happen. There is lots of petroleum still underground if all of the governments would let people drill for it. 

There are lots of alternatives. You'll get to hear about them when you need to.