I think I'm going to drive away my best friend.
Why would you want to drive your best friend away?
He's an idiot, and I don't want him ruining my life.
Idiots are hard to deal with. If your friend is truly annoying you and being an idiot, splitting with them is probably a good idea, but you shouldn't just drive them away. You should at least be honest with them about why you don't want to hang out anymore.
He's a creep. I can tell he wants to rape me. I don't want to go to jail.
If you really think that is true then you need to confront him about it. It sounds like you have a bad relationship with this person and maybe after confronting him you should separate entirely.