Is Cruise Control Greener?

Grist.org:

Q. Dear Umbra,

To cruise or not to cruise? That is the question. Is it more fuel efficient to use cruise control when driving, or does it use more gas to use the cruise?

Carrie
Waterloo, Ontario, Canada

A. Dearest Carrie,

Whether 'tis nobler to travel at constant speed -- that is indeed a question. And Edmunds.com, which has suffered the slings and arrows of tedious car testing, says an emphatic yes. The venerable car group found that using cruise control improved gas mileage by 7 to 14 percent, except in mountainous terrain. Cruise helps with several aspects of fuel efficiency, most particularly (and obviously) when it comes to maintaining one speed and smoothing your ride.

Read the whole story: Grist.org