 After 1990, "Rocar" (as it became known from 1991) started a cooperation with the bodywork company De Simon from Italy.During the 1990s, ROCAR lost most of its customers (urban transport companies), mainly because of the old technology which led to low quality, low production capacity, and high prices – therefore many of their former customers bought second-hand buses and trolleybuses from the west, causing ROCAR high losses around the turn of the millennium until 2002 when it went bankrupt.In an attempt at building market share they launched a low floor bus and low floor trolleybus in cooperation with in the 1990s, named 812, but because of low production capacity leading to a high price, it proved unattractive.