GNX (Grand National Experimental) was the highest level trim package available for the second generation Regal, and was offered in a limited number.
Only 547 models were produced following their performance upgrades by the Linamar Corporation's McLaren Performance Technologies division.
Need for Speed: Undercover
The Regal GNX appears in the game files of the PC, PlayStation 3, and Xbox 360 releases of Need for Speed: Undercover.
Despite the files referencing a Buick GNX, there is no mesh resembling the car present in the game.
Need for Speed: Payback
It is also offered as one of three race class starter cars.
|Need for Speed: Payback - Statistics|
|Complete chapter 1 - Ignition.|
|0 - 60||6.20|
|Need for Speed: Undercover - Cut Content|
|Cars||Buick Regal GNX · Chrysler 300C SRT-8 · Lamborghini Gallardo Superleggera · Lamborghini Reventón · Nissan 350Z · Subaru Impreza WRX STI · Volkswagen Golf GTI|
|Traffic||Camper · Cement Truck · Fire Truck · Garbage Truck · News Van|