Spotted my 1er twin eastbound on Mission Blvd between 880 and 680 a little after 8PM today. Yours seemed to be similarly modded, including the side skirts and spoiler. You were on the left lane and I was two lanes over to the right. Didn't notice until it was too late and quickly passed you but tried to slow down...not sure if you saw me. There was unfortunately a lot of traffic around and between us. Beautiful car!
Too bad I couldn't check your car out more, it's not very often that I see a nicely modded 1er.