Tesla held a “Battery Day” on Sept 22. It was an event where founder Elon Musk wanted to show off his company’s latest battery improvements. According to analysts, it was underwhelming. Tesla unveiled plans to develop a “million-mile” battery that could last an electric car’s entire lifetime on the road. It also outlined plans to dramatically reduce the cost of its battery cells and packs to US$100 per kWh ($136 per kWh), at which point experts believe electric cars will become comparable in price to com- bustion engine vehicles.

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