In the 1970s, the International Apfelpfeil Organization (IAO) instituted the so-called "Apfelfahrten" or "Apple Trips", nostalgic trips with special trains across Europe. In 1976, the IAO acquired the famous "Rheingold" vista dome cars and other cars in the TEE pool of cars from the German Federal Railroad. For several years these striking trains in the friendly "Apfelpfeil" design were a brand name for travel at affordable prices that was comfortable and animated. This concept could not be maintained economically later on in the face of increasing competition from single-price trips with charter flights. In 1979, IAO had to stop the operation and declare bankruptcy. The special cars were sold to another trip organizer, who rebuilt them partially and still operates them today.