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The Prius That Shook.. - VFAQ Prius Site

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transmission had been selected. Needless to say, there had<br />

been absolutely no mention of a hybrid system. <strong>The</strong> team<br />

that had reached agreement only about the packaging of the<br />

car and the numerical targets for power output and fuel<br />

economy. <strong>The</strong> fuel economy target was vague so as to be at<br />

least 50% better than existing (Corolla class) cars.<br />

Finally, the group began to address the questions of<br />

whether or not they could achieve the performance target by<br />

using existing parts and how many new parts needed to be<br />

developed from scratch. <strong>The</strong> team agreed that it would<br />

design a new platform, engine, and transmission. Since<br />

they had selected a new seating position, they also had to<br />

design the seat from scratch. <strong>The</strong> team members armed<br />

themselves with the rather coercive argument that they<br />

must try new units since they are designing a car for the<br />

21 st century.<br />

<strong>The</strong>y also decided to try electronic power steering to<br />

further improve fuel economy. Electronic power steering<br />

was used only on mini-cars and on certain passenger-cars at<br />

the time, and still had some problems in terms of cost,<br />

reliability, and performance. In theory, however, it was capable<br />

of improving fuel economy by three percent.<br />

"It is evident that it will become an essential item in the<br />

21 st century. It is definitely worth it to start trying it out,"<br />

Uchiyamada said, so electronic power steering was included<br />

in the new car. Most functional parts, therefore, were to be<br />

designed from scratch, but the group had not<br />

54

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