Hemp is one of the most sustainable materials available to manufacturers because it's cheap to grow, uses little water, doesn't need any toxic pesticides, and can absorb more carbon than trees. Hemp batteries have their own advantages, too. These batteries use lighter and more widely available materials like sulfur, boron, and hemp instead of the heavy metals used in traditional lithium-ion batteries. Some EVs use a device called a supercapacitor, which stores energy through static electricity rather than a chemical reaction, like in conventional batteries. In these batteries, a material called graphene is used. But graphene is expensive. To create ... "cannabis cars," scientists use hemp bark " a waste product created by cannabis plants " and cooked it to make a substance that resembles graphene. Hemp lasts longer than graphene. It also stores more power and is easy to source. Son Nguyen, Bemp Research's founder, told EnergyTech that the company's lithium-sulfur battery can help solve shortages in the EV battery supply chain. "Sulfur is very abundant. Boron is also relatively abundant, with the biggest boron mine being in California," Nguyen said. "Being an American company, our focus right now is to make batteries for American electric vehicles, and we do not see any supply chain problems. Bemp batteries are less reliant on rare earth metals from around the globe and thus will help U.S. national security."