The "long-distance train" - APO was originally tasked with finding a suitable train for long-distance traffic. However, it was later rumoured that the "lyntog"-concept might be re-introduced within a few years, and so it was decided to find a suitable design for that concept. Several requirements were made: primarily to use air-conditioning for cooling and heating of passenger areas, and be able to use either electric or diesel propulsion. The second requirement were due to the fact, that the Danish politicians had yet to decide whether or not to fund a proposed electrification of the mainlines of the Danish railroads.