We are still in our infancy as a species and as far as technology is concerned. If we dont destroy ourselves first then we may have a chance for us to develope the technologies needed. Thats a big IF though.. There may be some big advances wih the new antimatter generator they are firing up this month or next i think over in Europe. It will probably require another 5-10,000 years for us to develope the technologies needed to leave the solar system