Poznań, the firm went on to reach the position of Polish market leader in the segment of low-floor city buses. Initially, the Bolechowo plant manufactured licence-based buses of the Neoplan family: Neoplan N4009 Neoplan N4016 Neoplan N4020 Neoplan N4021 The buses stood out from other ones thanks to their reliability and the quality of execution, but above all thanks to their innovative design and, which was a novelty back then, its accessibility for elderly and disabled people thanks to the low floor. An element distinguishing the Neoplan buses produced in Poland from those made abroad was the green dachshund logo pasted onto the left-hand corner of the front face. It was supposed to symbolise the low-floor feature of the bus and the simplicity of use. The colour of the dachshund was a reference to the company's environmental commitment in the production of public transport vehicles. The green dachshund has remained the symbol of the company to this day. In the second half of the 1990s, the company Neoplan Polska expanded its own technical office in charge of research and development. Back then, the company was already using software that allowed it to shorten the time needed to design and build a prototype of a new model. Towards the end of the 1990s Neoplan launched a new generation of city buses. However, Mr Olszewski decided not to launch their production in the Bolechowo plant, as they would not meet with interest in Poland on account of their exorbitant price. Then, in 1998, the Neoplan Polska engineers constructed the first city bus to be produced only in Bolechowo – the Neoplan K4016TD (and its shorter version, the Neoplan K4010TD), for marketing purposes dubbed Olibus. 1999 saw the début of the first city bus of the Solaris Urbino family (see: section City and intercity buses). To begin with Neoplan Polska was tied by its contract with Neoplan, so the company of Mr Olszewski was able to sell buses only in Poland or in countries in central and eastern Europe. In 2001, Neoplan was taken over by German company MAN. That is why on 1 September 2001, the firm Neoplan Polska was turned into a private limited company (pol. spółka z ograniczoną odpowiedzialnością), and its name was changed to Solaris Bus & Coach Sp. z o.o. Krzysztof and Solange Olszewski became the sole owners. From that point on the export of Solaris buses was