[The spot where this accident happened is a known trouble spot, apparently, but something sounds suspicious to me. If you wanted to get rid of a car in that area why dump it on a train track? It's in the country.......... WAY easier to dump it in the bush somewhere, no one would stumble on it for ages then.
Sadly, in this day and age certain people do such things for 'fun'. We have a similar situation in the UK, though not with cars.
There was a frightening documentary on TV a few weeks back which used CCTV footage from beside railway tracks. Young kids were placing concrete blocks, treetrunks, parkbenches and suchlike across the tracks. This wasn't one isolated incident, but one of many which occur up and down the country every week. Thankfully due to the railside CCTV network there has been no major accident due to such stupidty....yet. One day the Transport Police aren't gonna have their eye on the camera, and the Intercity 125 is gonna plough straight into one of these obstructions with catastrophic results.
When I was a kid we sometimes used to mess about placing pennies on the tracks, but we were astute enough to realise that placing a 6 foot lump of concrete across 'em was a somewhat of a stupid idea. Kids these days seem to have that particular reasoning section of their brain missing.