After building hundreds of pre-production vehicles, GM is preparing its Orion Assembly Plant for retail production of the 2017 Chevrolet Bolt EV.It will arrive at dealer showrooms by the end of 2016, priced at around USD 37,500, minus a USD 7,500 federal tax rebate.The Environmental Protection Agency released its 238-mile range estimate for the Bolt on September 13.GM invested USD 160 million a...