A major investor in Hyundai Motor Co on Friday urged the automaker to improve its governance, as shareholders met for the first time since the Hyundai group paid $10 billion for a piece of real estate in a widely criticized deal. The decision in September last year to buy the land in Seoul’s affluent Gangnam district at three times its appraised value hit Hyundai Motor’s share price and rekindled investor frustration over opaque decision-making process at South Korea’s family-owned conglomerates.