Seattle, Washington [Associated Press] The spike in oil prices has prompted plenty of drivers to consider biodiesel-powered or hybrid cars for their daily commute, but what about that gas guzzler we use to fly across country? Government and corporate researchers are looking into ways to power commercial jet engines with alternative fuels, although many caution that widespread use could be years or even decades away. Scientists face myriad obstacles, including the difficulty of producing, transporting and using massive amounts of these fuels under harsh conditions such as extreme cold. And for now at least, experts say many alternative jet fuels are more expensive than traditional ones.
