Double-decker bus
The first commercial horse-drawn double-decker omnibuses were introduced in England in 1847 by Adams & Co. of Fairfield, Bow, then improved upon by John Greenwood, who introduced a new double-decker in 1852.
IC 2000
IC 2000 was the first double-deck train in use on a nationwide scale. Previously, most, if not all, double-deck trains, belonged to the Zürich S-Bahn network.
The IC 2000 typically has a dining or a bistro car, and a snacks trolley service on the upper level throughout the train set. Both the first and second class coaches feature luggage racks on both decks; in addition, small suitcases can be stored under the seats.