Dealers start to worry about ebbing repair income from electric cars

Honda Clarity Fuel Cell on lift at dealershipThe average vehicle on U.S. roads these days is more than 10 years old, despite three successive years of record new-vehicle sales. That's a result not only of the 2008-2010 recession but also vastly more durable and reliable vehicles compared to those of previous decades. All of those vehicles provide a ready stream of service revenue to...