- ACMA, (Ateliers de Construction de Motocycles et Accessoires) was a subsidiary of Piaggio, founded in 1950, in Fourchambault near Dijon, France, to produce, under licence, the Vespa. In 1957, it presented the Vespa 400, a micro car, designed in Italy and developed by Piaggio since 1952, and was probably the first 4-wheeler for millions of Vespisti. By the end of production, in 1961, 34,000 units had been built.
- There were very few of them in Italy: in fact, Piaggio and Fiat privately reached an agreement not to disturb each other on the domestic market.
- Air-cooled, 2-stroke, in-line twin-cylinder engine. Maximum speed 85 km/h.
- Registered in 1958, and always an Italian model. In 1961, following a change of ownership, it was registered in Arezzo, with number plate AR 28xxx, which it still has today, together with the logbook of the same year.
- Restored in 1976, when it entered the current collection, and used very little since then. It is in excellent condition, both inside and outside. Two-tone colouring.
- A perfect car to enrich any mini-car or Vespa collection.