How the hell does Tesla (sales: ~400,000) have a bigger market cap than GM (sales: ~2,000,000)? Is this just the market being irrational and Musk being a good salesman?<p>Is there any reason to think mainstream automakers can't put batteries in their cars? Is there any reason to believe Tesla's self-driving aspirations will pay off (over say, GM Cruise, or Waymo)?<p>I'm sure Tesla is fine and they make a few nice luxury cars, but I feel like I'm going crazy here: How is Tesla worth $380B, but Porsche is worth only 20B?