Re: it's already doing 17.46 km/hour
@Geniality - you didn't read that link did you?
Money quote: "But at 38 microseconds per day, the relativistic offset in the rates of the satellite clocks is so large that, if left uncompensated, it would cause navigational errors that accumulate faster than 10 km per day!"
So - relativistically tiny speeds still causing 10km per day error.
Pretty meaningful in my book. Your mileage may vary. (Ha! see what I did there?)
Biting the hand that feeds IT
