Could it be related to Yves Sunhill? He raced a single-seater buggy in 1985 Dakar, result unknown (at least where I looked up), and in 1983 he had a VW engined buggy, also single seater.
P.S. That is, of course, in case the car was actually entered in one of Dakars and was not left unfinished or just raced elsewhere.