The picture shows another problem we have – overweight people. How much gas would we save if every American walked to every destination less than one mile away?

American consumers are showing signs of a shift in attitude, with a growing number of people making fuel economy a primary concern — a potentially worrisome sign for Detroit’s automakers.

More new car shoppers are looking for four-cylinder engines, while sales of V8-powered vehicles have fallen in recent weeks. Cars continue to regain market share from trucks.

And today, a survey by Consumer Reports, the bible of the big-spending baby boom generation, says 37% of people in the market for a vehicle want a more fuel-efficient model than they currently own, a jump from its previous surveys.

Of course, some still don’t get it:

One automaker is already hustling to get ahead of the curve. General Motors Corp. said Tuesday that it is launching a promotion that will allow California and Florida buyers of certain vehicles — including its all-new full-size SUVs — to get gasoline for $1.99 a gallon for 12 months, regardless of how far they drive.