Complex sentence: Generally, the short-wheel-base (SWB) 600 models were designed to be owner-driven; the long-wheel-base (LWB) 600, often incorporating a central divider with power window, was intended as chauffeur-driven.
Split into simpler sentences: Generally, the long-wheel-base (LWB) 600 was intended as chauffeur-driven; many featured a central divider incorporating a powered window between front and rear compartments. Short-wheel-base (SWB) 600 models were designed to be owner-driven.