sentence2_structure: The turning driveshaft<>causes<>the wheels of the car to turn$$$the wheels of the car<>to turn<>
sentence1: The idea was to make the cars turn easier because of better traction on the front wheels, caused by  more aerodynamic downforce.
sentence2: The turning driveshaft causes the wheels of the car to turn.
question: What causes the wheels of the car to turn?