I can't quote the verse, but there is something about how God deals with His own and we can get punished, but the sinners don't. God will let you get the ticket and the sinner won't get one. It also might have scared the man for you to follow him. You have great courage. This man could have had a gun or a knife and you could have been harmed.
People kill for no reason.
Please follow God's lead, that is what we pray for, and may all your encounters be safe. I would not have had your courage. All we can do is try to help someone. You did the right thing, but in this day we must also be careful not to get our teeth knocked out. I wouldn't want to hear of you becoming a terrible victim of road rage .