I can't connect with my parents?

Idk if this is normal and how it happens for everyone but me and my parents don't get along anymore I am 19 years old, and recently started my own business that is prospering very quickly. I now have enough money to move out and be set for the rest of my life. My parents always cared and tried to keep me sheltered as much as they could. But I grew up like an average teenager partying, drinking, smoking pot, etc. My parents never have liked my habit and it got to the point where they took away my car and gave it to my younger brother, which was a slap in the face because it was helping me become an adult by working and going to school, and things just seemed to be getting worse to the point were they cut me off completely. Basically hinting for me to get out of their house or thats at least how I take it. They treat my younger brother very differently than they do me, almost to the point were I don't feel like I am really their kid. My brother gets away with things that I used to do that caused my parents to be the way they are with me right now. My brother thinks its cool that he gets away with what I never could, I laugh at my parents because I think one day they are going to be in for a rude awakening when my brother does something wrong. My parents have made my life a living hell for the past 5 years My real question is, part of me wants to just move out and cut off communication with my parents and my brother. I know me and my brother will run into each other at least once or twice a week because we hang out in a big group of friends and are a year apart in age. How would I go about being around him, I feel that it might be awkward because I don't want anything to do with my parents anymore and they or my brother will want to know why I have suddenly just left the family... I really do not know what to do, because things are so messed up...