https://www.reuters.com/article/us-tesla-musk-lawsuit/lawsuits-accuse-teslas-musk-of-fraud-over-tweets-going-private-proposal-idUSKBN1KV2IQ >Tesla Inc and Chief Executive Elon Musk were sued twice on Friday by investors who said they fraudulently engineered a scheme to squeeze short-sellers, including through Musk's proposal to take the electric car company private.