A car design company has unveiled a pen that they claim will never run out.

Pininfarina's 4.EVER Pininfarina Cambiano (PDF) is a tapered affair with a machined aluminum barrel inset with wood sporting the company's logo.

According to the company, the barrel itself is solid, and has a tip that is made out of a metal alloy called " ethergraph " that writes forever, CNET reported.

Each pen is going to be sold with a notebook that is made of "stone paper," an eco-friendly, water resistant, and durable paper made from powdered stone.