We all have rear steering (passive)
Spoke with John about this lastnight, he was shocked too. When the first brochure for the Cougar came out I of course read all the fine details and one was the "Quadralink suspension" which allows for "passive rear steering"
At the AutoCross the other cougar owner immediately said "Yeah I feel that when I take a hard turn, it's the quadralink suspension" which was the first cougar owner I've met that actually knew about it. It's a feeling of your rear giving a little in a tight turn, almost like mild drifting.
Well I found an article that doesn't get into the details (still a mystery to me after removing 3 linkages that felt totally solid in the rear) but confirms it's there:
http://autoweb.drive.com.au/cms/A_51602 ... ticle.html
Ford's unique Quadralink suspension system incorporates passive rear-wheel steer to improve wheel control when cornering or braking. It also helps absorb variations in road camber and mid-corner bumps.