The market value of Tesla Inc (NASDAQ:TSLA) has plummeted by a staggering $234 billion this year, surpassing the combined worth of industry giants such as McDonald’s Corp ($212 billion), Walt Disney Co ($202 billion), and Nike Inc ($148 billion). What Happened: Tesla’s market value has seen a significant decline of 29% in less than 10 weeks, reaching its lowest point since May this year, reported Business Insider on Thursday. This has caused the company’s market capitalization to drop from nearly $800 billion to just over $550 billion. The decrease in value is almost equivalent to the entire m…