Correction for the speed of The TGV (train)
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How fast is 388,499,945.578830 knots?
It's about 2,000,000 times as fast as The TGV (train)
The speed of The TGV (train) is about 170 knots.
(Train à Grande Vitesse) (for SNCF TGV Réseau, a.k.a. "Network" model, a.k.a. TGV-R) (maximum speed)
The TGV Réseau sets have a top speed of 170 knots. The train is capable of travelling the 425 km (264 mi) distance from Paris to Lyon in East-Central France in about two hours.