For a while I have e-mail contact with the Frensh Nicolas Breuillard, a French VW forum moderator and organisor af the line-up on VW Nationals 2006.
On VW Nationals (May 28 2006) an impresive line-up of 74 split busses is created:

On the spijlbustreffen (July 03 2006) an impersive line-up of 84 split busses is created:

Nicolas picked up the idea of a French / Dutch cooperation and asked me to reply on this forum post if you plan to join in a mega splitbus line-up http://93159.aceboard.fr/93159-1904-499 ... ion.htm#vb on the race track during Le bug show in Spa.
The negotiations of when / where / start time are still going on...