Toronado.org

Yes, Mercury first offered the breezeway window with the famous Turnpike Cruiser of 1957. That continued through the following year, 1958. Lincoln Continentals also offered a breezeway window in 1958-1960. A second generation of Mercury Breezeway cars was again started in 1963, Through 1966, these were pretty close to 90 degree rear windows that would go down completely, very similar to the 58-60 Lincoln Continentals. For 67-68, the breezeway window was a rear window that was on an angle like a normal sedan, and went down a couple of inches when rolled down to maximal distance. All years were electrically controlled window mechanisms. For the final year of this body style, 1968, the breezeway became an option and cost extra. My car actually has a fixed rear window as the buyer did not think it was worth the extra money I guess. I basically bought the car from the original owner, same as my Toronado. The Merc is not as heavy as the Toro, and actually is very fast with the rare 428 cid engine. The suspension is more conventional and springy and the car does not handle as well as the Toro. The Q-jet carb on the Toro is also a better design than the more tempermental Holley. But for a big 60s sedan, these Mercs were well built and actually great highway cars.

This is a link to what was supposedly McGarrett's Mercury from the Hawaii Five-O series. Not the flush rear window of the hardtop -- no breezeway. I do have copies of the pictures found in the glovebox of the car if you're interested. This car had the rare 428 cid engine like my Merc, was a Park Lane Brougham, but this one had power windows while mine doesn't (only about 1/3 of Mercury's did that year).

http://www.mjq.net/fiveo/50mercury.htm