fuel-efficiency

Why Wall Street Is Betting Against General Motors

Short sellers have significantly increased their bet that GM shares are going to drop: Short interest in the No.1 U.S. car company jumped 26.5% to 41.5 million shares in the two-week period that ended May 15.

It May Be Time to Get Used to Costly Gas Prices

And that means it may be time for owners of gas-thirsty SUVs and cars to start considering the switch so many Americans are loath to make: to a far more fuel-efficient vehicle. Looking out over the next several years, it's hard to see oil -- and gasoline -- falling back to earlier lows.