Ain't hyperfocus both wondrous and a curse?
I remember leaving work once at lunchtime, crunching code in my head. I wasn't fully aware when a young woman in hot pants walked out of a store and preceded me down the busy street.
My eyes locked on her arse, but my head was still coding.
I woke up several blocks past the takeaway store I was originally headed for.
I wasn't consciously following her...I was just doubly distracted.