HAG was a German automobile manufacturer that originated as Hessische Automobil AG in Darmstadt, active from 1922 to 1925. In 1925, production was taken over by Waggonfabrik Gebrüder Gastell, a railway wagon manufacturer based in Mainz-Mombach, which continued building cars under the HAG name until 1927. The company was noted for a sound design and for concentrating on a single model with continuous improvements, which allowed it to remain in…
