It could be a Lambretta Voiturette, for La Poste.
Google 'small French micro vans' for pix of the ilk.
(I think I knew someone who once drove an ilk.)
Sans permis - we have the equivalent in Spain: 'sin carnet' - which inclues various offerings by Ligier, Microcar, etc.
Some are getting a bit chunky these days (like evrything else), and aren't far off the size of something like a Corsa. What distinguishes them is a single-cylinder (often Kubota) diesel engine, obviously with a substantial flywheel, very leisurely gear changes, and a good deal of wobble and vibration at idle.
