hi cd, long ago they said that the sound barrier was an impasse, and just because one person came up with E = MC2 (squared) dose not mean that we are stuck with the faster than light impasse. at present we do not have the know how, just like the pioneers of the airplane a jet was way beyond them, but we learned and we built the jet engine. who knows what the next few hundred years will bring, plasma drive is science fact now,

i do belive there are intelligent life forms out there, who have the knowledge of interstellar flight, who knows maybe voyager may meetthem and by learning to read the gold disc within  voyager of earth they just may give us a visit.