Complex sentence: She has a habit of driving extremely fast (she drives the family Rolls-Royce Phantom like a WRC driver, though she sometimes drives the other Nogizaka limousine), but Haruka just states she is a great driver when one is in a hurry.
Split into simpler sentences: She has a habit of driving extremely fast (she drives the family Rolls-Royce Phantom like a WRC driver, though she sometimes drives the other Nogizaka limousine limousine). Haruka states that she is a great driver when one is in a hurry.