Oil prices fell below $100 a barrel Friday for the first time in five months.

Hurricane Ike is missing some of the gulf's oil rigs, but the country's largest complex of refinerites is expected to take a direct hit.

The Texas coast is home to about one-fifth of the refining capacity in the U.S.

Exxon Mobil, Valero Energy and Conoco Phillips are among the companies that have stopped refinery operations on the Texas coast.

Some gas stations in Ike's path have run out of fuel.

In other parts of the country, like one station in North Carolina, drivers are limited to just 10 gallons of gas.

Energy analysts say the worst thing people can do is panic and force a rush on gas stations.