The Nissan 370Z is a 155-mile-per-hour anachronism — a sports car you’d be forgiven for forgetting the Japanese auto company even makes anymore. Released in 2009 and lightly refreshed three years later, the mid-priced coupe has soldiered on largely unchanged, an interminable run in an era of nimble adaptation for mass-appeal sports cars, which have bowed to fuel economy concerns and other industry trends.