The Subaru G4e is an electric car undergoing development and testing by Japanese automaker Subaru. It was unveiled at the 2007 Tokyo Motor Show. The car seats five in a functional, accessible interior and has a wedge design with a low 0.276 drag coefficient. It has a range of 200 kilometres (120 mi) and can be fully charged in about eight hours from a home AC power source. A quick charge to 80 per cent of the batteries' capacity is possible in just 15 minutes. The G4e uses a lithium-ion battery developed exclusively by Subaru which employs vanadium technology to allow the battery to store two to three times more lithium ions than conventional lithium-ion batteries. The car's battery pack provides 346 volts, and is located underneath the passenger compartment.