Shares of General Motors Co GM tanked in early trading on Wednesday, despite the company surpassing revenue and earnings estimates.The General Motors Analyst: Wedbush analyst Daniel Ives maintained an Outperform rating and price target of $55.The General Motors Thesis: The company reported revenues of$47.12 billion, down 2% year-on-year, but significantly higher than Street expectations of $45.84 billion, driven by "strong demand for its vehicles and stable vehicle pricing," Ives said in the note.Check out ...