When I drive my Buick LeSabre in heavy traffic and take my foot off the gas,
the car does not decelerate as well as two other cars I have driven
recently, Camry and a Focus. All of these cars are 4-speed automatics. The
Buick is a 6 cylinder while the Camry and Focus were both smaller 4 cylinder
engines. It helps to drive the Buick in a lower gear while in traffic, but
I found I didn't need to do that in the other two cars. Can anyone explain
why this is?