Is she must be doing something wrong then? I've seen Mondeos that won't do that
QED. That's the Blue Oval for you. I'm a GM man to the core
She only know's two speeds - Parked and Foot to the Floor.
However, the T56 six speed gear box has two overdrive ratios. Fifth is 0.75 : 1 whilst sixth is 0.5:1 so the engine is doing half the speed of the transmission. At 80 mph the engine is doing only 1800 rpm.
This is all part of GM's corporate CAFE strategy to satisfy fuel efficiency legislation.
Corporate Average Fuel Economy (CAFE)
http://www.ita.doc.gov/td/auto/cafe.html means that you add up all the fuel efficiencys of your entire vehicle range and find the average value, which must be less than a mandated value.
Therefore, as long as you produce a few mini cars and small, highly fuel efficient vehicles, you can build a few gas guzzlers as well. The 6 speed box helps the total highway fuel economy value for the bigger engines.