The honorable James B. Utt first says that he could not even make an uneducated guess as to the future of space travel but then, in true politician form, makes one anyway. His contribution appears in full below.
The Honorable James B. Utt
Congress of the United States
Your request with reference to a prophecy for your space capsule, I can only say that I do not have a Buck Rogers imaginative mind and could not even make an uneducated guess. The cost of escaping gravity will probably always curtail any commercial space travel, but the time will come when the scientists will be able to change the molecular body system and reduce the weight to zero and reconstruct the molecular system at any place and any time. Travel will then be as rapid as the mind can conceive. Personally, I do not look forward to this with any sense of enjoyment
You can find the book 2063 A.D. listed here on Amazon but I wouldn't count on copies becoming available anytime soon. Only 200 copies were printed and distributed to various universities.
General Dynamics Astronautics Time Capsule (1963)
Broken Time Capsule (1963-1997)
Lyndon B. Johnson on 2063 A.D. (1963)
Edmund G. Brown's Californifuture (1963)