Some people like to upgrade their cars with aftermarket parts or parts from other vehicles from the same manufacturer. Usually it’s a small part or maybe a set of wheels that satisfies their itch. Other people go a little bigger with maybe custom body work and paint. Then way on another level, we have what was done with this 1997 Mercedes-Benz S600 in Russia. It’s impressive enough to have a Mercedes tweaked by legendary tuner Brabus, that this car is, but it’s a whole other ball of wax once you see what is hiding inside this car and the special surprise hiding in the trunk. Here is a hint: It isn’t subwoofers.