The real F1 pilots use simulators to train, that's right. To drive a current F1 means to change differential, brake balance, MGU-K Delivery and MGU-K Recovery and the MGU-H setting (or change between different hybrid presets). And off course use the steering wheel, gearbox and pedals. The acceleration and brake power changes depending on the hybrid settings. What are they going to train if the simulator doesn't have the hybrid system implemented?