GM announced that several versions of its compact Chevy Cruze would no longer have spare tires; instead, they’ll have vehicle-powered sealant repair kits. This is a major jump in the trend toward eliminating spare tires, a trend due largely to CAFE’s drive to shed every possible ounce of car weight.
Some argue that spare tires are unnecessary, given the growing presence of run-flat tires, tire pressure monitors, and roadside assistance systems. But the fact that spares are being eliminated in the name of fuel economy, rather than market demand, demolishes one of the chief claims of CAFE’s advocates. For several decades, the need to reduce vehicle size and weight in order to raise mileage has been CAFE’s Achilles’ heel. Smaller, lighter cars not only hold fewer passengers and less baggage; they’re also less crashworthy. CAFE-induced downsizing causes several thousand additional traffic deaths per year.
Proponents of CAFE argue that while vehicle downsizing may once have been needed to raise fuel economy, it has been obviated by new technologies. As a result, they claim, CAFE no longer forces us to give up safety for other car features.
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