The guy turned himself in after seeing a newspaper report that basically left nothing to the imagination with regard to what the police were looking for. The truck was exactly as I described it, and he drives that route to work every day. He said he was turning himself in because he "didn't know he hit a person" (Note: that screaming you hear might be an indication, Tom Druce. You might also notice the cars stopping behind you, people getting out of those cars, the bloody guy on the lawn...or, you could just gun your engine and take off, because it was a "sign") and saw the report, figuring "it was just a matter of time before they caught him."
It's been hard to shut it off.