One-time series. Prototype: Three German Federal Railroad (DB) InterRegio passenger cars of different types. One type Aim 260.5, 1st class passenger car, one type Bimz 264.2, 2nd class passenger car, and one type ARkimbz 262.2 "Bistro Café" half dining car. Light grey/far blue basic paint scheme with pastel blue trim. Train route: IR 2670 from Constance to Kassel. Car road numbers 49, 50, and 51. 1993 operating condition. Model: Complete new construction of the InterRegio car family. Multi-coloured interiors. All of the cars have factory-installed LED interior lighting. A buffer capacitor is installed in each car to bridge short-term power outages. Equipped with separable, current-carrying close couplers. The interior lighting works in combination with the marker light car from the 43901 set; the specified car sequence must be followed. Transparent red marker light inserts at the ends of the cars. Type-specific underbodies with many separately applied details. Buffer height according to NEM. With MD 366/367 bogies with and without an attached generator. Separately applied fans on the car bodies. Imprinted car running signs. Cars individually packaged in additional outer packaging. Minimum passable radius 360 mm. Length over buffers approx. 84.6 cm. Highlights Completely new design of the InterRegio car family. Multi-coloured interior fittings. Standard built-in LED interior lighting with buffer capacitors. Separable, current-carrying close couplers. Buffer height according to NEM. Many separately applied details.