To explain, I have this idea for a spacecraft and here's how (in theory) it would work. According to Einsteins theory of special relativity you would need an infinite amount of energy to reach light speed, however if a spacecraft were to go let's say .999 the speed of light through acceleration, the engines could shut off and because there is no air resistance in space it would continue to travel at .999 then in order to travel FTL all you'd have to do is accelerate to that speed multiple times and you could go an unlimited amount of times faster than the speed of light without interfering with Einstein's special theory of relativity because you would only be appear to travel FTL.