The 50th Anniversary Sable page is an exercise in creative writing. The photos are from a real listing on eBay in February 2007 and it is a real car, but I do believe that it's one of those dealer packages that "increases" the value of the car (such as vinyl roofs). Anyways, you found this so here's your easter egg. It's the original description from the eBay listing. Nice bonus, right? Heh, I didn't think so. Whatever.

1989 Mercury Sable GS with only 35,000 original miles 50th Anniversary Addition I'm the 2nd owner. It has a V6 3.8 liter fuel injection engine with 4spd auto W/OD. It has the power when you need it and is also good on gas!!! 19 city 28 hwy. Go to WWW.fueleconomy.gov for fuel consumption. This car is adult driven and nonsmoker, it is in great condition it has P/Windows P/Locks P/Mirrors P/Steering P/Brakes P/Driver seat,Tilt Steering Steering wheel controls, cruise control, AM/FM Radio with cassette, Keypad entry,. The exterior is Maroon with only a few small ping marks, The interior is Gray that is in mint condition, no rips or tears. The tires are in good condition, the A/C works but I think it needs freon it does'nt come out cold. It has a clean car fax.I have the original owners manual. If you have any questions you can call Anthony@ ***-***-**** GoodLuck on your bidding

BTW, I got the idea from this:
http://www.snopes.com/humor/mediagoofs/sixpence2.asp

Hope you liked it. Let's keep it a secret. ;)