911 GT3 Cup

Sadly, they're not actually orange. Nor do they smell like citrus when they get hot. But by infusing orange oil into natural rubber, a new line of tires from Yokohama cuts four-fifths of the petroleum needed to manufacture a tire. They lower rolling resistance too, meaning better fuel efficiency. Subcompacts and fuel cells and hybrids, oh my Yokohama is initially offering its dB Super E-Spec lines of tires in four different sizes for both 15-inch and 16-inch wheels, to fit smaller vehicles. The company names one subcompact, four hybrids, a natural-gas vehicle, even one hydrogen fuel-cell car...