SPEED RECORD : On March 31 2010, during NABX, Arjen van der Tol (Holland) sets a new speed world record on his kite buggy at Ivanpah Dry lake, USA at 133.4 km/h / 82.9 mph(recorded on GPS) sailing a 2.7 Peter Lynn Vapor kite.
You can see below the whole story (from Surfertoday.com) and the video which is quite impressive.
You can also wonder what is the mountainboard speed record (around 80 km/h I believe), why shy such a difference and how it can be improved...