Composites are such a great material for energy conservation. Their superior stiffness to weight ratio allows for them to replace other materials in sectors like transportation in order to gain weight savings. These weight savings of course require less energy to move and stop the vehicles.

This of course comes back to the horsepower to weight ratios which are no secret formula. They were discovered decades ago by racers of all kinds who made their vehicles as light as possible to gain advantage, many times using fiberglass. The sailboat guys know it too; the lightweight carbon fiber masts reduce weight versus aluminum to buying viagra now gain a weight advantage. Drag car bodies made of lightweight fiberglass instead of sheet metal or aluminum.

Circle track cars with fiberglass hoods, noses, and bumpers.

Examples of conserving energy with composites, and the racers got it right a long time ago!