DEARBORN, Michigan — Kevin Kroll is excited to own his first electric vehicle, and the new Chevrolet Bolt EUV he wants is in stock at the dealership — but he’s been waiting for two weeks to take it home. The Bowman Chevrolet dealership in Clarkston where he’s purchasing the Bolt is awaiting approval to offer the new point-of-sale clean-vehicle tax credit. It’s administered by a new Internal Revenue Service system launched Jan. 1 to allow dealers to provide the up-to-$7,500 federal tax credit on qualifying electrified vehicle sales when customers make their purchase. Doing so allows customers t…