This lecture discusses the implementation of a four-wheel drive system in a car for the 2023 racing team, focusing on the integration of dedicated motors in each wheel to enhance grip, torque vectoring, and regeneration. The presentation covers the comparison of different compound planetary concepts, the selection process using MATLAB, and the detailed design considerations for creating a producible gearbox. The lecture concludes with the analysis of load simulations and the potential performance impact on the Formula Student Competition.