71 km/s per megaparsec is an acceleration, not a velocity.
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convert 71 km per second to miles per hour
Out pops: In each case this would be the acceleration over a megaparsec (about 3 million light years)
Sounds about right for the Hubble Constant.
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5,795 kilometers per second = 12,963,050 miles per hour (rounded)
km/sec x 2,236.94 = mph
(24.1309 / 60) * (km per s) = 899.654766 miles per hour
67,108.09 mph
60 miles = 96.561 kilometers (rounded)