Nanomaterials could make future automobiles and airplanes lighter and stronger and most of all improve fuel efficiency. Nanotechnology promises to make everything from new coatings that are scratch-resistant and self-cleaning to batteries that last longer for hybrid vehicles. In the longer term, nanotechnology applications will most likely make hydrogen easier to produce and safer to store as a renewable energy source for vehicles. Most experts agree that nanotechnology will play an important role in advancing hydrogen fuel cell technology. See Chapter 8 for more information about hydrogen fuel cells.
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