Tesla Battery Day event finally happened. Elon Musk made some big announcements. The company is planning to get rid of Cobalt in their batteries and to manufacture its own “tabless” batteries, called 4860 cells. This type of battery is six times more powerful, and the range will be increased by 16 percent. The new battery technology will make a $25,000 Tesla car a reality. Tesla Model S with Plaid powertrain also was announced, which can reach 60 mph in less than 2 seconds and break records on tracks. Max speed: 200 mph.