Hey @ashokroy79 Very well replied. But these EV are not going to replace present Vehicle's in upcoming days. why because

1. Most of the people accept the change.(Once its get a crazy thing then only they will come to know)
2. If Present vehicles are replaced with batteries they may fear about the charge in transportation(Left out).
3. They also think about suitable conditions of the batteries to withstand or not.

In my point of view it may take upto 2030
But @finprep said in this post EV's will increase upto 10-25X times.

Let's see what will Happen in a fasting upcoming growing world.

I;m a 90's kid and if everything fine and goes well, I can see the amazing inventions and latest upcoming technologies in 2050 ;-)

Thank you.
Have a good Day.