We could do it again, it'll just take a while to get there. :') The next one will be a direct attempt (Voyager I just happens to have lasted long enough to send data; the nuclear battery aboard both Voyagers have lifespan measured in a few decades), and use some other kind of propulsion, at least for the upper stage. Using an orbiting laser or very large reflective array (or series thereof) to boil off propellant might be tried, or plasma drive. And the trip to, say, the outer Solar system might take under ten years. Taking a stab at getting a ship to
Proxima Centauri could be done, but would take a little longer. :')
2.4690309E13 miles... V1 is moving about 37 mi/sec... 667305648649 seconds... over 21,000 years... piece of cake...