Complex sentence: The XLR is a retractable hardtop marketed by the Cadillac division of General Motors, assembled in Bowling Green, Kentucky, and based on the Y-body platform shared with the Chevrolet Corvette.
Split into simpler sentences: The XLR is a retractable hardtop marketed by the Cadillac division of General Motors, assembled in Bowling Green, Kentucky. It is based on the Y-body platform shared with the Chevrolet Corvette.