Robert Way / iStock Editorial via Getty Images Tesla Inc. (NASDAQ: TSLA) CEO Elon Musk likes to say Tesla is not a car company but a robotics and artificial intelligence (AI) company. However, a look at its most recent earnings shows that is not the case, for now. Of its $28 billion of revenue in the most recent quarter, over$21 billion was from its automotive business. The challenge to its valuation for now (Tesla has the 10th largest market cap in the world at $1.4 trillion) is unit sales. Local elect ...