I understand where you are coming from, but there are no reference points in space. In theory you can travel faster than the speed of light. Say the earth was moving at a speec 1/4 the speed of light, the solar system was moving at 1/4 the speed of light, the galaxy 1/4 the speed of light, and the universe 1/4 the speed of light, we would be travelling at the speed of light relative to someone watching our universe fly by. Although the speeds are slightly exaggerated, this is possible. However, our speed is only relative to the object we are travelling on or with at the same speed as ourselves. So even though our solar system may be travelling in a different direction, or the same, and our compound VELOCITY may change, the MAGNITUDE OF THE VELOCITY (ie speed) stays the same, and thats all that matters.