Thanks for the picture. I like that very much. It has the look and feel of a 1930s German 'motoring travel' poster, so "Winter-Ausflug" would still make sense in terms of a someone taking a winter break. Looks like an affluent family with their luggage departing from a swanky hotel or a country house.
It wasn't unusual for artwork commissioned for advertising purpose to also be sold as prints by the artist, with or without the accompanying blurb from whatever company commissioned the work, including limited editions such as yours.
Or it might just be something later, taking its inspiration from that era. Unfortunately, that doesn't bring us any closer to an artist name or date.