Reuters:

The new suspension springs, based on a technology patented by Sogefi, will be made from a glass fiber-reinforced polymer instead of steel and will weigh between 40-70 percent less than traditional steel springs, the company said.

They can be assembled on cars and light commercial vehicles without affecting the suspension system architecture, allowing for a weight reduction of 4-6 kg (8.8-13 lb) per vehicle, it added.

Via Stefan Constantine.