Fastest speed attained by a manned rocket sled

Fastest speed attained by a manned rocket sled (1,017 km/h)

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Fastest speed attained by a manned rocket sled (1,017 km/h)

is 2.5 x Fastest speed attained by a helicopter (401 km/h)...more
is 5 x Fastest speed attained by a steam train (202.6 km/h)...more
is 10 x Comfortable driving speed (100 km/h)...more
is 20 x Top speed of a Blue Whale (50 km/h)...more
is 25 x Top speed of an African Bush Elephant (40 km/h)...more
is 25 x Top speed of a Great White shark (40 km/h)...more
is 50 x Top speed of an Eastern Gray Squirrel (20 km/h)...more
is 200 x Comfortable walking speed (5 km/h)...more

If this was a standard unit ...