As much as we liked the design of the Cadillac XT4, not everyone was onboard with its style. Some liked it while some didn’t. But everyone seems to agree that the XT4’s lighting signature was its best feature. As it turns out, there was good reason for that. The SUV’s exterior design manager, Therese Pinazzo, admitted to Autoguide that the company put particular importance in developing the XT4’s lighting structure to make it look high-end without having to spend too much in costs.