there is also a train of thought that you will never hit the speed of light, as with speed, the heavier you get, so the only way you can travel at the speed of light is if you have no mass. end of, unless through a worm hole, which in ecsence is bending space.
IE: if you draw a line from a dot to dot on a piece of paper it will take you x amount of time to get from *a to b* but if you bend the piece of paper then traveling from *a to b* will be less.