Tesla Motors has halted production at its sole assembly plant for a revamp the company said is necessary to speed Model S output and prepare it to make electric crossovers.

Electric cars are on the brink of a price war, as more new models become available and secondhand Japanese imports sell for as little as $25,000.

The Gigafactory is Tesla's name for the massive, all-in-one battery factory it's planning to build somewhere in the American West, starting in the next few weeks.