You need to know the difference in the Miles per gallon for each car. If they are the same, it is $2.66 - $2.44 x 7000 miles, or:
$0.22 x 7000 = $1540 per year.
According to wisegeek.com, 8 ounces of whole milk has 150 calories, and approximately 8.5 grams of fat. Nonfat or skim milk has .4 grams of fat and contains 86 calories per serving.
Your question could be interpreted two ways:
1) Will drinking nonfat milk make me fat?
In this case, fat is a...