I wanna play 4 10" which is 1000watt each midrange speaker how many watt amp do I need?

I hear you and feel the same way. The shape of a car's interior is terrible for sound and it just bounces all around the windows and hard plastic, canceling some of itself out and is blocked by soft seats which also soak up some high frequencies. Cars weren't designed with audio first in mind lol.

One time I tried some door speakers inside the house and they sounded like garbage. Some part of me thinks car speakers need to have some sound quality sacrificed to make them rugged enough for the road vibrations/moisture and such.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.