Thinking about it, given that the thing could do 40-50mph, I’m not sure you’d want track braking at those kind of speeds . Just a gentle nudge from the front wheel…
50mph, that's impressive. I would tend to agree then, at that speed and given its geometry, it's likely to fail the "moose test" if a track brake is applied.
French, from the three stud wheels - possibly Simca Cinq wheels. Microcar, from the size and seating layout, aircooled rear engine. Think it's a Reyonnah.