"If they can stop themselves from being aggressive accelerators, they can save as much as 30 percent. If they can eliminate unnecessary idling, they can save about 11 percent. On the highway, if they remember to use cruise control, they can save as much as 14 percent," he said.
For the next month the two families will try to apply Phil's sage advice and video blog about the experience to document their progress. Check back here for their latest entries.