The Cadillac CT5 Custom Widebody, through its modification, accentuates a more aggressive visual stance and improved aerodynamic performance. The wide wheel arches are a notable addition, significantly enhancing the vehicle's sporty character. Moreover, the widened arches provide space for the installation of wider tires, which not only contribute to the car's aesthetics but also enhance its road grip and handling capabilities. Overall, these modifications likely result in a more striking and performance-oriented Cadillac CT5.