After paying $75 to fill his black Dodge Ram pickup truck for the third time in a week, Douglas Chrystall couldn't take it anymore.

Feeling pinched at the pump, and guilty as well, Chrystall, a 39-year-old father from Wellesley, is putting ads online to sell the truck, and the family's other gas-guzzler, a Jeep Grand Cherokee. He knows it will be tough to unload them because he is one of a growing number of consumers downsizing to smaller, more fuel-efficient cars...

...Sport utility vehicles and pickup trucks - symbols of Americans' obsession with horsepower, size, and status - are falling out of favor as consumers rich and poor encounter sticker shock at the pump, paying upward of $80 to fill gas tanks.