For electric vehicle manufacturer Tesla, not everything is about shareholder lawsuits and controversies surrounding its mercurial owner, Elon Musk. The company announced last week that it’s investing more than $3.6 billion to expand its Nevada manufacturing facility, including a factory to mass produce its Semi electric truck, the Wall Street Journal reported. The expansion will include a new factory for its battery — to the tune of batteries for 2 million light-duty vehicles annually —