I came across this webpage today with some information on a 250cc JLO powered Claeys-Flandria. A one-off prototype made by this motorcycle company in Belgium for the 1955 Brussels Salon. I've never heard of this car before, does anyone have any further info? The page mentions a book "A history of the Belgian car" by Uitgeverij Lannoo te Tielt.
http://www.collectioncar.com/gazette_detailed.php?id=52