I found it interesting when i learned that no matter how fast you are travelling through space, you will alwys measure light to be travelling at the same speed. Then I thought of something: What would happen in this situation. There is a race. The two racers are me, wearing my "light speed" shoes that lets me run at the speed of light, and the other racer is light itself. Watching this race is the observer Karl. The distance to run is a light minute. (ie the distance light travels in a minute). Who wins the race? This is what I think, and it seems kinda strange. Karl sees both me and light travelling at the same speed and we both reach the finish line at the same time (in one minute). On the other hand, I, the runner, know that i am running at the speed of light but while im running, i measure light to travel at light speed with respect to my frame of reference. So although the runner reaches the finish line 1 minute after the start of the race, light fininshes the race in a fraction of a second in the runner's point of view.