Tesla unveils cheaper versions of its Model 3 and Model Y

Tesla has unveiled the long-promised cheaper model of its Model Y, dubbed the TK, after the expiration of the $7,500 tax credit for American buyers of most of its cars.

​ Tesla has unveiled the long-promised cheaper model of its Model Y, dubbed the TK, after the expiration of the $7,500 tax credit for American buyers of most of its cars. Read More Breaking News, Latest News and Videos | CNN