I would suggest that he is in error somewhere.
I know that it is possible to spin a bicycle wheel at ridiculous speeds on no-drag rollers (IF the gearing is present to do it) but as for actually moving through dead air? Not likely.

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If you really want to sprint to 50+ MPH it can be done, but not on a regular bicycle.
http://www.recumbents.com/faired.htm

People who own fully-faired hard-shell 2-wheel HPV's say that an "average" rider can cruise at about 35 mph and usually get them up over 50 mph for brief periods.
They are cramped, have poor rider visibility and don't like crosswinds however. Also bring $$$$. Kevlar is highly recommended for the shell, since it will protect you from "cheese grating" in a sliding fallover at speed....
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