The outcome of your race reminded me of a highway pull I had against a previous generation (06-09) Audi S4. These cars have a ~350hp V8 and the one in question had some exterior mods and an exhaust, so who knows what else was done. I realized that I would have a significant weight advantage and the quattro zaps quite a bit of power on it's own. However, 350+hp is still quite a bit more hp than my meager 215, so my only question was how quickly would the S4 actually pull on me.

Well, I was very suprised that I was more or less able to keep up with the car when I accelerated in 5th gear. I have to say I was surprised and I still think the guy wasn't completely in it. He eventually moved to a neighboring lane and gave me a thumbs up. If the guy really wasn't holding back, he should consider selling the car. I was partially considering an S4 prior to the Crossfire as I really like the sound of the Audi V8, but I'm partially happy I never gave them much of a look.