Complex sentence: Landyacht is colloquial term in the United States, Australia and parts of Canada, used to describe the large sedans that American automobile manufacturers produced, particularly full-size, rear-wheel drive sedans, from the 1950s through the 1980s.
Split into simpler sentences: Landyacht is colloquial term in the United States, Australia and parts of Canada, used to describe the large sedans that the American automobile manufacturers became known for. The term is commonly applied to full-size, rear-wheel drive sedans dating from the 1950s through the 1980s.