Afraid to move 3,000 miles for college

I'm afraid I won't get along with my roommates. I already know them, and they're all rich (I'm lower class and will be paying my tuition on my own, can't afford a car, will barely be able to afford groceries) and one of them drives a fucking hybrid and they all have MacBooks and idk they're just really spoiled. I'm also concerned about politics and stuff with an election coming up, I am super liberal and left wing I just have an open mind to everything and everyone and I don't think they're like that and I'm afraid they could start conflicts with me. 

I'm also afraid of not having a car. I know there's buses but those are expensive and don't go everywhere. 

Idk I'm just getting cold feet I guess. I was so excited and now I'm terrified.