Well, seems like he was a one and only. I can't see others or any sign. I will take another look tonight just in case they are in hiding now.
He sure knows other kitties though. When he sees the other ones he purrs up a storm. I want to get him health checked before allowing too much contact. You can count every little rib on him.
I am not the hero. That was my friend who stopped the car and searched for him in the ditch and then looked around for any others for some time before bringing him to me.
Without her he surely would not have made it through the night.