I've just read that very story! The bent headlights one, that is, in Loren Coleman's Mothman and other curious encounters. There's not much more detail then that, the lights bent towards an 'object' in a field. Space/time distortion or invasion by sentient panes of bendy glass? You decide.
You will note that whilst reading this book and posting this, two men dressed in completely black suits have been knocking on doors on my road. They seem to have rather strange pale faces, however, I put this down to streetlighting. They are probably from the gas company.