In the nineties, Integral Verkehrstechnik of Austria developed the concept of a modular, lightweight multiple unit that could be offered in lengths between three and eleven car bodies and with diesel or electric propulsion. The first, last and every other second car body were mounted on two single axles. All others had no axles at all and were suspended between the other ones. The axles were actively steered to reduce wear and tear.

The only order came from the Bayerische Oberlandbahn (BOB) in Bavaria, Germany. They ordered 17 five-car sets with three 300 kW diesel engines each. Two engines were located in one end car and one engine in the other end car, with each engine driving one axle. They were delivered in 1998, but although the concept of the vehicles was innovative, they faced lots of problems during their introduction into service.

These problems required the thorough rebuild of these vehicles with the help of Molinari Rail and ultimately contributed to the end of their manufacturer. After the rebuilds were finished in 2000, the trains provided their service as they were supposed to. In 2020, the BOB replaced them with Alstom Coradia LINT and sold them to the Regiobahn for service within the S-Bahn Rhein-Ruhr. Also with this operator, they were often out of service due to repairs. In August 2025, the first set was scrapped.