Toyota unveils $1.8 billion share buyback after strong second-quarter profits

TOKYO (Reuters) - Toyota Motor Corp unveiled plans for a $1.8 billion share buyback on Thursday, after reporting a more-than-expected quarterly profit on better global sales and an improvement in its North American business.Japan's biggest automaker posted a 14% rise in operating profit to 662.3 billion yen ($6 billion) for the three months ended September, from 579.1 billion yen a year ago. It was Toyota's strongest second-quarter earnings since 2015.The profit beat an average forecast of..