Lithium Americas Corp LAC shares had surged over 90% by noon on Wednesday, fueled by a flurry of government actions, General Motors Co GM commitments, and retail investor fervor. The rally has triggered a Golden Cross, a bullish indicator signaling positive momentum ahead.Track LAC stock here.The spark? Reports that the Trump administration is seeking up to a 10% equity stake in the company's Thacker Pass lithium project as part of a DOE loan renegotiation.Related: Trumps Wants A Stake In Lithium Americas F ...