I pulled up next to a silver mercedes that had a the AMG logo on the back at a stop light. I didnt really think too much about racing him, but when the light turned green he floored it and took off. I didnt know we were racing so Ilet him go for that one. At the next light he rolls down the window and says "you cant keep up with me" So when the light turned green I was ready for him. I put about a car length on him to 60 and let off. He did the ricer fly by and when we stopped at the next light he asked me how much nitrous I was running... I told him none and he flipped me off and took off. My mods are CAI tune and exhaust. I dont know what kind of Mercedes it was. I know some of the AMG cars are real fast. It didnt sound like a V-8 and it was a bigger car.