The EV-N concept car
In 2009 Honda surprised visitors of the Tokyo Motor Show with the EV-N concept car. The EV-N is a kei car with N-Series inspired looks. It is an electric car with lithium-ion batteries. The batteries are also charged by solar cells on the roof.
The inside of the EV-N door panel contained the U3-X self-balancing one-wheeled electric vehicle. The U3-X is designed with Asimo robot technology. It weights 10 kg and can travel at 6 km/h.