Step 1: Get a job. Then, save up enough money to fix car and move out.

Also, consider trying to get along with them better. If mom asks "who did I raise?" Just reply, "an independent thinker." What's so hard about that? My mom is dead and there is no house to go back to as 'plan B.' So be thankful and be patient. My dad and I always bump heads about politics. So I try not to argue with him and focus on enjoying the little time we have on this earth together.