By me at least.
You want to know what it is, don’t you? Here you go.
It features, if that’s the right word, 479cc of twin cylinder diesel producing 6kW of power which gives you a maximum speed of 45 kmh, as required by the regulations about voitures sans permis, cars which you can drive in France without a licence.
Want to know where I found it? Right here on my battlefield memorial tour last week.