I just love posts like these. It opens your mind to explore other possibilities. Like, what if you went a millionth of a percent faster than then speed of light? Would you then be able to see anything behind you? Because the light reflected to see objects wouldn't reach you.
Another thing: If you traveled faster than the speed of light, would you go back in time? As in, see events that happened in the past, since you overtake the light reflected by objects that took part in these events? I might be completely off the track here, but it's just some fun stuff to onder about. Very informative post!