Now that Saudi Arabia and {a place} and those other {an adjective} Arab countries have raised the price of gasoline, millions of patriotic {a plural noun} are trying to economize.  Americans are riding bicycles and {an adjective} small cars.  Many people have turned in their old, gas-guzzling {a plural noun} and ride to work every day in a/an {noun}.  Scientists are working on {an adjective} substitute for gas.  One is called {a silly word}.  It is made by mixing regular gasoline with {a liquid}.  Other people are depending on electric {a plural noun}.  These are very {an adjective}.  But there is a problem.  You have to stop every {a number} miles to have your {a noun} recharged!