Subaru have been involved in the development of low emission vehicles such as hybrid vehicles since the mid-1990s through an ongoing process of trial and error. One of the more successful designs owes its development to the outstanding progress of lithium ion batteries. Here, the vehicle is built around a simple yet highly efficient electric vehicle system instead of a conventional engine. The resulting R1e electric vehicle that Subaru have developed boasts an extremely high efficiency when compared to ordinary petrol powered vehicles. The R1e is vehicle that is ideally suited to urban environments in that it emits no CO2 when driving and is extremely quiet. The convenience of the R1e is evident as the battery can be recharged by simply connecting the power plug to a home power outlet, while a special rapid charger can deliver an 80% charge in just 15 minutes. Running costs are also vastly reduced compared to a petrol powered vehicle. Demonstration tests of 40 R1e electric vehicles driven on public roads began in June 2006 in a joint effort with Tokyo Electric Power Company (TEPCO, Japan), one of the world’s leading power companies. Demonstration tests were also carried out in September 2007 following collaboration with the Kanagawa Prefectural government. The valuable data obtained from these tests will be applied to electric vehicle designs to make them even more convenient and comfortable than they are today.