: Alt-Tab to the trainer and toggle the desired cheats. Most trainers use "F-keys" (F1, F2, etc.) or specific hotkeys to enable features.
Advanced trainers allow you to unlock and purchase "hidden" or high-tier cars like the Porsche Carrera GT , Chevrolet Corvette Z06 , and Nissan Skyline GT-R in career mode, even if they were originally restricted. Technical Usage & Stability nfs carbon trainer v1.4