I prize running, biking, and skateboarding to work. I'm grateful my worst-case commute is a 40–minute walk home along the Charles River.
Composites are awesome, but expensive. While you can buy a $500,000 hyper car made of carbon fiber and Formula-1 technology, you can't buy a $10,000 light-weight Hyundai. The Grand Challenge would propose a prize competition to solve the challenges associated with reducing the cost of composite manufacturing.
Composite vehicles use less fuel usage, make fewer emissions, and create less wear and tear on roads.
Light weighting the vehicle industry in the near term has many mutually reinforcing benefits for the transportation and infrastructure industry, and society in general. Our transportation industry would have less wear and tear. Our roads would be quieter and safer. Our air would be cleaner. The world would look more 21st century. It would look like the future.