Tesla teases mysterious new product: Elon Musk reveals firm to 'make product announcement' today - but won't say what it is

Tesla chief executive Elon Musk said on Tuesday that the company planned to make a product announcement later today. The company declined to offer details before the announcement. Tesla chief executive Elon Musk said on Tuesday that the company planned to make a product announcement later today, causing shares in the firm to spike. Shares rose more than 1 percent after the post and were recently trading up 3.69, or 1.7 percent, to 226.62 a share. Internet users have specualted the announcement could be a larger capacity battery for its car, or a new'powerwall' system for homes.