Figured I'd do something different...and yes I've beaten Hondas and some Mustangs, but I got beat a while back.
My buddy has a 98 Camaro, with 2.73 gears and a lid/catback. The car has ran a best of 13.4. We were on I70 about 3 miles from our exit and I decided to strech the GTP's legs. I pulled beside him, honked once to let him know I was interested, and we slowed to about 65. When we were even and traffic was catching up, I three honked. I held even for about five seconds then he slowly started pulling. At 100 he was a solid car ahead and we let off. Even at 100 I could only see the left side of his bumper.
I feel better about my car knowing it held it's own with a mid 13 second car. Later he told me his brother's full bolt on LT1 car did the exact same thing.