Using the assumption that our universe is relative, I was thinking that the size of our universe is also relative. An ant (in our perspective) is a very small animal.  For ant to walk a mile, it would talk around 3 hours. We are significantly larger than ant, but still very small in comparison to our Earth.  Traveling a mile can take a normal human at walking speed around 15 minutes.  The earth, which is much larger than anything that populates it, travels at a speed of 1,000 miles/hour – a mile would only take roughly 4 seconds.  By this idea, we see that as the object grows in size, the distance of travel becomes smaller, and the time in which it takes to travel becomes shorter.  If theoretically, there was a mass large enough, our measurements of time and speed would become relatively obsolete.  Traveling the speed of light would mean nothing with a mass the size of an 1/4 or 1/8 or even 1/16 of that distance.