I do get a kick out of hypermilling...
I used to own a 56 Studebaker witth a 3 speed with overdrive and guess what extra feature this OD Had??
Free wheeling..in one setting it would allow the car to free wheel, step off the gas and the transmission was disconnected and the engine would drop to idle, step on the gas and once the engine's RPMs caught up with the drive shafts speed it would lock up.
Until you lifted your foot again. In this setting you had no engine brakeing.
Rich
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