The SHO was one of the fastest cars on the road when it was being produced, thanks to a 220 horsepower 3.2 liter Yamaha V6 (with the automatic - the 5-speed manual cars had a 3.0 liter V6).  This is a Generation 2 SHO (1992-1995).  The first generation SHO only came with a 5-speed manual transmission.  The third generation cars were of the new "round" Taurus body-style and came with a V8.  Ironically enough, the V6 SHOs were faster. 
I love it because it is a sleeper.  To see it coming down the road, you just think it's another family sedan.  However, it really does move along quite quickly, if I do say so myself.  I am technically the second owner.  The car was driven as a demo for two years by the dealer's son, then Karen Foertsch and her husband bought and drove it for the next nine years.  I bought the car from Karen via her son, Chris, who is a big station wagon freak like me.