Okay so this was a weird dream... It happened right after I told a few friends that my family didn't care about me... So in my dream I walk out of a church, and I was late in leaving the church by 10 minutes. My family waited for me, but when my dad saw me finally come out, he got really angry. He drove the car away from me and left me, then he sped up to something like over 100 mph and he crashed into a tree 100 or so feet from the church. I cried. I was shocked that my whole family died. Then I stood in line for a restaurant with my friend, still crying. My friend was comforting me.
Short dream. I didn't remember much of the dream when I woke up.

Thanks for interpretations in advance, I appreciate them a lot

Since you dreamed this right after you told your friends your family didn't care about you, the dream is probably an expression of your anger and then your feeling guilty about being angry at your family. The church probably has to do with morals and conscience - how you probably feel that it's wrong to think badly of your family.