Simplify the following text for a Grade 4 native English-speaking person.
Original: The Volvo S80 is a mid-size executive saloon\/sedan from Swedish automaker Volvo Cars , and was introduced in 1998 to take the place of the rear-wheel drive Volvo 960\/S90 saloons in the model range . The Volvo S80 was built at the Torslanda Plant ( Torslandaverken ) in Gothenburg , Sweden .
Simplified: Volvo S80 is a car produced by Volvo from 1998 to the present day .