Complex sentence: Liebeck was in the passenger's seat of a 1989 Ford Probe owned by her grandson Chris, which did not have cup holders, and Chris parked the car so that Liebeck could add cream and sugar to her coffee.
Split into simpler sentences: Liebeck was in the passenger's seat of a 1989 Ford Probe which did not have cup holders. Her grandson parked the car so that Liebeck could add cream and sugar to her coffee.