Have a look at the 2nd half of the below video, It shows amazing footage from a GoPro helmet cam view of SYLVAIN HOCEINI in Luderitz traveling over 106km in a 1 meter wide ditch on a Griffin kite I designed and sent over.
Respect to SYLVAIN HOCEINI and the other speed racers over in Luderitz. There is no room for error. I heard that Sylvain took a hacksaw to his board before the speed run to reduce surface area and drag from the board.
Disclaimer: I design and import the kites, the video and sound track was put together by a French euro so deal with it.