SAN FRANCISCO, Nov 9 (Reuters) – Tesla Inc (TSLA.O) shares slid to their lowest level in nearly two years on Wednesday after Chief Executive Elon Musk sold $3.95 billion worth of shares in the electric-vehicle maker. The shares were down 6.1% at $179.66 in afternoon trading. Musk's latest share sale fueled jitters about the fallout of his Twitter buy on the world's most valuable automaker, analysts said. The billionaire's recent acquisition of Twitter sparked investor concerns including whether he would be distracted from running Tesla or divert resources to the social media company. Some investors also feared the possible impact…