for next weekend it's the Zoute GP in Knokke, Belgium
in the entry list there are 2 Bugatti's listed
35 with Gilbert Lodomez & Jean-Charles Garrot
35B with Arie Stelloo & Vanessa Van Laer
the rally is driven on friday and saterday
sunday there's also a concours, yet cars can and some will be different
no entry list from there so far

I do not know the first car mentioned but Arie Stelloo owns a Lookalike NOT a Bugatti!
Bugwrench

wouldn't surprise me
last year with the first edition even the organisers themself were running a fake bentley

Bugatti at The Zoute Grand Prix, Knokke-Het Zoute (B),

- I° The Zoute Grand Prix, Knokke-Het Zoute (B), 16-17th October 2010
#4 T57 R Cabriolet Gangloff 2007 ('57157'-R), OCE-847 (B)
#86 T57 C Cabriolet Aravis Letourneur & Marchand 1939 (57826) WH.230 (B)

- II° The Zoute Grand Prix, Knokke-Het Zoute (B), 13-16th October 2011
#3 T35A Course Imitation "Tecla" 1925 (4652) OBA-973 (B), Gilbert Lodomez / Jean-Charles Garrot
T57 C Cabriolet Aravis Letourneur & Marchand 1939 (57826) WH.230 (B)

- III° The Zoute Grand Prix, Knokke-Het Zoute (B), 4-6th October 2012
#1 T57 Coach Ventoux 1934 (57119) 1-OZC-474 (B)
#2 T40 Grand Sport 1929 (40774) OAT-206 (B)
#6 T57 R Cabriolet Gangloff 2007 ('57157'-R) OCE-847 (B),
#7 T54 Grand Prix 1932 (54201) 4311-NV1 (F),
#14 T57 Coach Ventoux 1938 (57655) 1-ZAF-815 (B)
#17 T101C Antem 1951 (101504) OCJ-844 (B)
#39 T50T Coach Profilé 1932 ('50157') DAS 739 (GB)

EB Veyron GSV () 1-ZZD-169 (B)
EB Veyron GS ()