Shares in Elon Musk's Tesla (TSLA) slumped in Tuesday morning trading after the electric vehicle maker revealed that its new product, hinted at in a series of cryptic posts on X on Sunday, is a stripped-down and cheaper version of its Model Y SUV. Tesla shares gained more than 5.4% by the closing bell on Monday after the EV maker posted gifs on Sunday of a spinning company logo with the date "10/7" and of what appeared to be car headlights shining through smoke. The stock moved down by more than 1% in th ...