New York CNN  —  Tesla will hold a shareholder vote on whether Elon Musk’s carmaker should invest in his artificial intelligence startup xAI, the billionaire said Sunday.  “If it was up to me, Tesla would have invested in xAI long ago,” Musk said in a post on his social media platform X, which itself is a part of xAI. “We will have a shareholder vote on the matter.” Musk has been pouring resources from his other companies into xAI as he seeks to compete with AI leaders like OpenAI, Meta and