About 3-4 weeks ago (before my MS CAI), a WRX STI noticed me on my commute home. He was about 3 cars behind me, swerving left and right to see what I was. He pulled left into the carpool lane and punched it, so I did the same. He remained a constant about 150 feet behind me and didn't close on me. I was in 3rd gear and ended in 4th. I know he was WOT because I could see his front end drop and raise again as he shifted and from the look he gave me when i slowed down to see his reation. After he pulled up next to me, he punched it again like a bat out of hell and probably hit 125 getting his embarrassed self out of there. It was a Black WRX STI w/modified exhaust. We were in Kent Washington on 167 south. I hope he reads this cause I want to hear his explaination. One thing I have noticed is that in 3rd gear and up, the MS3 has a very good acceleration. The acceleration curve from 60-75 MPH is steeper than the EVO and STI, and the other contenders like the VW GTI, Civic SI, and Eclipse.
By the way, were weren't technically racing since we were in the same lane and he was far behind me. Also, not too long after shifting into 4th, I let off and slowed down.