it is not such a tiny car. it was a collector french car built from WWII to late 80's. The concept was to keep it as simple as possible with only the basics in it, fairly comfortable and a straightforward, easy to maintain engine. The shape is king of unique with a roundish body, retractable sunroof (manual of course) and flip us side windows.
it was a huge success in France and a bit Europe but never in the US or Canada. I believe South America had some at one point.
Your chance of finding one down here are minimal.
Even if you find one in Colombia or Chile, it will be impossible to import due to its age, or very expensive.
I would try to redirect to a good old beetle for your kit.