I would like to visit the USA! [Careful: in English, we don't put a space before exclamation marks, question marks, and colons like in French]

Someday, I'd like to visit the USA. It's a really fascinating and really huge country. It seems that Americans are a lot less stressed and rude than French people and are more friendly. Moreover, I love big pickups and big cars, so it would be a pleasure to see all these Dodge RAMs on the highway! I feel like all everything is disproportionate there: huge and very long highways, tall buildings, enormous trucks... And When I hear people talking about Las Vegas, it sound like another world, as if this city was were on another planet [Two things: (1) English has a subjunctive voice! I know, crazy :) It's not used very often, and most native speakers mess this up. But I'm pretty sure you should use the word "were" instead of "was" here, because it should be "as if it were" not "as if it was". (2) avoid beginning a sentence with the word "And"]. It's both fascinating and disturbing! I want to get go there so bad! :)

I would like to visit the USA !

Someday, I'd like to visit the USA. It is a really fascinating and really huge country. It seems that Americans are a lot less stressed and rude than French people and more friendly. Moreover, I love big pickups and big cars, so it would be a pleasure to see all those Dodge RAMs on the highway ! I feel like all(everything is a better word) is disproportionate there ; huge and very long highways, tall buildings, enormous trucks...And when I hear people talking about Las Vegas, it sounds like another world, as if this city was on another planet.(Period instead of comma to eliminate a comma splice) It's both fascinating and disturbing ! I want to go there so bad ! :)

Few mistakes overall.