Complex sentence: Mercedes launched a cabriolet (convertible) version in Europe in 1991, the 300 CE 24V, and in the UK (RHD) and Japan (LHD), the 320CE, and North America, the 300CE, in 1992.
Split into simpler sentences: Mercedes launched a cabriolet (convertible) version in Europe in 1991, the 300CE-24 cabriolet, and in the UK (RHD) and Japan (LHD). The 320CE, and North America, the 300CE, in 1992.