Just to weigh in without reading every line of the above drama...

1) This is all really dumb. Having an NYC HQ doesn't change your image unless you are in high fashion or the arts. At this point, having a Detroit HQ is honestly better marketing optics. This seems to be about some Caddy execs and their advertising friends wanting to move out east and pretend they're Don Draper.

2) This is a needless, inexplicable slap in the face to Detroit.

3) What level of control does GM have over this? They fully control Cadillac do they not? Aren't they alter egos? How and why did GM allow this?