Staff members clean a Toyota i-Road electric vehicle in Tokyo April 9, 2015. Tokyoites will get a chance to zip around town on Toyota Motor Corp's three-wheeled electric car-cum-motorbike from Friday, in a trial aimed at crafting a global business model to reduce gridlock and pollution. REUTERS/Thomas Peter

A Toyota i-Road electric vehicle drives in a underground parking lot in Tokyo April 9, 2015. Tokyoites will get a chance to zip around town on Toyota Motor Corp's three-wheeled electric car-cum-motorbike from Friday, in a trial aimed at crafting a global business model to reduce gridlock and pollution. REUTERS/Thomas Peter

Toyota's i-Road chief engineer Akihiro Yanaka sits in one of the electric vehicles that is to be used in a planned car sharing scheme in Tokyo April 9, 2015. Tokyoites will get a chance to zip around town on Toyota Motor Corp's three-wheeled electric car-cum-motorbike from Friday, in a trial aimed at crafting a global business model to reduce gridlock and pollution. REUTERS/Thomas Peter

A Toyota i-Road electric vehicle (C) parks outside a hotel in Tokyo April 9, 2015. Tokyoites will get a chance to zip around town on Toyota Motor Corp's three-wheeled electric car-cum-motorbike from Friday, in a trial aimed at crafting a global business model to reduce gridlock and pollution. REUTERS/Thomas Peter

Toyota Motor Corp's Toyota i-Road is seen at the 43rd Tokyo Motor Show, November 20, 2013. Fourteen Japanese and 18 overseas carmakers and motorbike manufacturers are participating in the Tokyo Motor Show, which kicked off on Wednesday for the media. REUTERS/Yuya Shino (JAPAN - Tags: TRANSPORT BUSINESS) 

A staff member plugs a charger cable into Toyota's i-Road electric vehicle in Tokyo April 9, 2015. Tokyoites will get a chance to zip around town on Toyota Motor Corp's three-wheeled electric car-cum-motorbike from Friday, in a trial aimed at crafting a global business model to reduce gridlock and pollution. REUTERS/Thomas Peter

A staff member plugs a charger cable into Toyota's i-Road electric vehicle in Tokyo April 9, 2015. Tokyoites will get a chance to zip around town on Toyota Motor Corp's three-wheeled electric car-cum-motorbike from Friday, in a trial aimed at crafting a global business model to reduce gridlock and pollution. REUTERS/Thomas Peter

Toyota's i-Road chief engineer Akihiro Yanaka poses behind one of the electric vehicles that is to be used in a planned car sharing scheme in Tokyo April 9, 2015. Tokyoites will get a chance to zip around town on Toyota Motor Corp's three-wheeled electric car-cum-motorbike from Friday, in a trial aimed at crafting a global business model to reduce gridlock and pollution. REUTERS/Thomas Peter

A logo of Toyota is seen on the steering wheel of Toyota's ultra-compact tandem two-seater electric vehicle i-ROAD during the Toyota Advanced Technologies media briefing in Tokyo October 10, 2013. Toyota showcased its new technologies, including Automated Highway Driving Assist, Pre-collision System and a prototype of a Fuel Cell Vehicle to reporters. Picture taken October 10, 2013. REUTERS/Yuya Shino (JAPAN - Tags: TRANSPORT SCIENCE TECHNOLOGY BUSINESS) 

A journalist drives a Toyota ultra-compact, tandem two-seater electric vehicle i-ROAD during the Toyota Advanced Technologies media briefing in Tokyo October 10, 2013. Toyota showcased its new technologies, including Automated Highway Driving Assist, Pre-collision System and a prototype of a Fuel Cell Vehicle to reporters. Picture taken October 10, 2013. REUTERS/Yuya Shino (JAPAN - Tags: TRANSPORT SCIENCE TECHNOLOGY BUSINESS)