Re: it's already doing nnn,nnn KM/sec !
Well perhaps back in 1980 it was a cylinder and not a golden disk originally.
As Voyager approaches the speed of light, something called the Fitzgerald contraction becomes effective.
There once was a fencer named Fisk,
Whose speed was incredibly brisk.
So fast was his action,
The Fitzgerald contraction,
Foreshortended his foil to a disk.