convert meters to feet
30 M = 98.43 FT
That's 5-6 car lengths which is a recommended minimum highway speed spacing, right?
I would have thought a much closer distance would be optimal, as
drafting.
http://en.wikipedia.org/wiki/Drafting_(aerodynamics)
Quote:
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Drafting or slipstreaming is a technique where two vehicles or objects align in a close group reducing the overall effect of drag due to exploiting the lead object's slipstream.
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This "suction" he talks about must be something different.