Two hundred thirty-eight. Not so long ago that number would have been unthinkable. When Tesla Motors Inc. rolled out its first electric car, the 2008 Roadster, it boasted what was then a jaw-dropping range of 244 miles on a single charge. It took $110,000 to get your hands on one, but Elon Musk promised that it would usher in an era of long-range affordable cars. This week a century-old Detroit automaker, General Motors Co., not Tesla, unveiled the latest breakthrough electric car. The 2017 Chevy Bolt and its 238 mile range rivals that of the Roadster and at a third of the price. The Bolt’s $37,500 sticker price isn’t exactly “affordable” for the average American buyer, but in terms of range per dollar spent, GM just bested every other electric vehicle on the market, including the full lineup of Teslas. The chart below breaks down the race for cheap […]