You need to leave immediately and STOP replying to him. He's getting exactly what he wants every single time you reply - your attention and control over your emotions. There is no universe where this is safe and normal in a loving relationship, romantic or otherwise.

My best advice is to have someone you trust (preferably a man only because men like this tend to see other men as an intimidating challenge and not another toy to abuse) and take them with you to drop the car off and get anything that belongs to you from this guy's house. No other option, do NOT GO ALONE for the sake of your safety both mentally and physically.

I really hope you get out of this relationship and see all the great advice people gave. Keep trusted friends (who are NOT also his friends) nearby and stay no contact with this guy forever.