This is called Autohaus Golbeck, and it's in Kreutziger 28, where "Tagblatt" is located. See https://www.autohaus-golbeck.de/autohaus-kfz-werkstatt-berlin/standorte-friedrichshain-buch/filiale-autohaus-golbeck-berlin-friedrichshain - there is a showroom on Frankfurter Allee, but it is (a) no longer car- but "mobility"-focused, and (b) it's on the other side of the passage in building 34. 