bennelson -
From what I know, Saturn took the plastic panel process and refined it for the S-Series.
From what I understand the plastic panels on the Fiero were *supposed* to contribute to a weight benefit, but the engineering led to a very heavy frame, so the Fiero is very heavy for it's size, with a curb weight close to about 2600 lbs. The upside is that it is "safer" than other cars it's size and it's probably well-suited to carry heavy battery packs.
Pontiac Fiero - Wikipedia, the free encyclopedia
Quote:
A mid-engine layout was chosen as a way to reduce both aerodynamic drag and vehicle weight to improve fuel efficiency, and also for its handling, traction, and braking benefits. The sports car potential of the mid-engine layout was not fully realized when the Fiero debuted. In line with its market position, the tires, brakes, and some suspension components were carried over from other GM economy cars (like the Chevrolet Citation and Chevrolet Chevette) so the Fiero could be priced appropriately.
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A large following of owners still exists with many web pages, groups, and clubs devoted to the car, and the basic chassis is commonly used as a kit-car platform from wild custom rebodies to Ferrari F355 replicas. Due to their small size and weight, they are also a popular choice for all-electric conversions.
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CarloSW2