I got all of the info below from Wikipedia.
BMW 760Li-P:
Apparently, BMW is building the F01/F02 7-series in its Toluca factory in Mexico. That means the Federal Police, the military police, the federal government, and some municipal police (like Cancun) are using the 760Li-P (P for police) as cruisers and transporters. The P package comes with rifle mounts, run flat tires, an upgraded 590 horsepower V12, and armoring that can withstand an RPG-7 attack. Hijole!
Mercedes S600P
Similarly, Merc W221 S-class is manufactured in Santiago Tianguistenco in Mexico. The P package comes with the twin turbocharged V12 from the S65 AMG, run flats, gun mount, and B6/B7 armoring. A few S600Ps were exported to the Guangzhou PD in China. Ay caramba!