Given declining sales of the Echo, which never really found success in the U.S., Toyota needs the 2007 Yaris to boost sales in the entry-level econo-car segment. With six years of continued success in Europe, where the subcompact market is far more cutthroat, Toyota felt the Yaris might also appeal to American buyers. That is yet to be seen, but with gas reaching three dollars a gallon and Americans looking for more economical cars, Toyota may hit the jackpot with the Yaris.