If I would invent transportation, I would invent a door that can go everywhere I want. = If I could invent a transportation system, I would like to create a door that can bring me anywhere I want.

Before I go to somewhere, I have to write a place at the door. = Before going somewhere, I will have to write a location's name on the door.

Next, if I open the door and out, I'm already in the place I want!!! = The next step would be entering the door and reaching to the other end which is the place you want.

Isn't is amazing??? = Isn't it amazing?

I wish this invention invent on scientist's hand.....
Because if I make it, this amazing invention will be ruin. = I wish for this invention to be created by another scientist's hand because if I will be the one to make it, this amazing invention will be ruined.

I'm sure about it !!! = I'm simply sure about it!

NOTE: You have a really fantastic idea in your mind, dear! I love to have that door as a mean of transportation. I won't need to suffer carsickness anymore! ^^