What happens to electric-car sales when tax credits sunset? Each maker differs

2018 Tesla Model 3Toward the end of last year, electric-car shoppers began to think about a U.S. market without the $7,500 federal tax credit for their purchases of plug-in vehicles. While the tax credit ended up surviving the massive tax-cut bill passed in December, some automakers are still about to face the end of the incentive. As designed and implemented in...