I'd like to know how they worked it out. It could
have been disastrous within a certain speed range.

At 01:48 16 January 2008, Gm wrote:
On Jan 15, 4:26=A0pm,
wrote:
Watch this whole movie. Notice very interesting take-off
in the middle
of the video.http://www.youtube.com/watch?v=3DklkFmT1WFs4&feature
=3Drelate=
d
How about the social aspect of soaring?

Jacek
Pasco, WA

Cool! I heard about gravity launches but that is the
first one I have
seen documented. Does the narration say anything about
the prevailing
wind speed?