Tesla Motors unveiled its newest and cheapest electric car Thursday, cutting the price tag to $57,000 US from over $100,000, in a move that could transform the boutique California firm into a mainstream automaker.
The Model S prototype debuted amid much hubbub at a rocket factory in Southern California, the main market for its electric cars. Automobile Magazine has described the vehicle as a cross between an Aston Martin and a Maserati.
The Model S is powered by a massive lithium-ion battery ...