Nissan launches a longer-range version of it's best-selling Leaf electric vehicle. According to the firm, the new model can travel about 50% further on a single charge than it's predecessor. Other features include a new one-pedal driving system, auto-parking tech and a more modern design. More than 283,000 Leaf cars have been sold since the Japanese firm launched the brand in 2010, making it the world's most purchased electric car. However, it is facing increasing competition in the fast-developing "green" car market, fuelled in part by tightening emissions standards around the world. "The general industry standard for model cycles is around six-to-seven years, so the launch of the second generation Leaf falls neatly in to this timeframe," commented Ian Fletcher, principal automotive analyst at the IHS Markit consultancy. "However, the next three to four years looks set to see further upgraded and brand new vehicles, and manufacturers in this sp