I talked with him a few years ago. I showed a photo of the Saturn to several well experienced autobody guys in western MA and asked them what they thought happened to the front of the car. I asked them in a very neutral, non-leading way. "How do you think this happened?" They all said roughly the same thing. But one of them immediately recognized the Saturn and told me he had seen it in Amherst before it was found in NH. He recognized it and said it had the "ripples" in the hood. He then went on to describe the Corolla, which he had seen close-up on Monday, and he had talked with the police who were inspecting the Corolla very carefully.
Presumably, if the cops looking at the Corolla knew its owner, which they did, then they also knew from RMV records about his ownership of the Saturn, which at that point was still a few hours from being discovered abandoned on 112 in Haverhill NH. Considering the fact that the police were looking for a vehicle that might be involved in a potential case of motor vehicle homicide, it seems logical to assume they would want to know where the Saturn was, too.
Since the autobody guy had already talked with police about what he knew, I saw no harm in posting that information - years old by then - online. A few hours later, after dark, someone lightly vandalized my backyard. They stripped the cables from my lawnmower and threw around some cross-sections of a recently felled maple tree. This neighborhood is an exceptionally safe one. In over 20 years there was not the slightest vandalism that I ever even heard of. No breaks, no suspicious persons around, nothing. It seemed that mentioning the Corolla inspection online and the vandalism were most likely connected, like it was a message. Maybe they got scared off when they must have tripped a motion detector light in the backyard.
It's a weird and hard thing to explain.