My brother in law skins and eats these little things when he can catch them. It seems a bit mean as its not as if he is hungry and there can't be more than a mouthful on them anyway.
I ran over a fair sized snake once when i was coming back from the bar there was a definite bump bump as the wheels went over it. My wife complained that I didn't go back for it so we could have it for dinner.
A couple of days I found this thing in the garden and brought it in for her, thinking that I had at last found something I might be tempted to try. But apparently it is bad luck to kill them.