The Nio normal: Chinese electric carmaker seeks to plug buyers into lifestyle app
* China's answer to Tesla uses online store to stoke brand loyalty. * Nio's own digital currency credits used to buy, trade goods. * Investor bets on China electric cars propel Nio market value to $70 bln. * Car sales small; challenge to turn consumer interest into vehicle purchases -analyst. SHANGHAI, April 27 - In Shanghai, aerospace executive Lu Hao didn't just buy a sleek electric SUV from Nio. , China's answer to Tesla . He bought Nio's whole vision of a future where social media, e-comm