The most important vehicles at the 2017 Detroit auto show

The 2017 edition of the North American International Auto Show won’t go into the books for blockbuster introductions and eye-popping concepts. In fact, so many brands either didn’t show up or didn’t have formal press events (Porsche, Tesla, Fiat Chrysler, Land Rover, Jaguar, Mini and Mitsubishi among them) that you might wonder about the future of this annual event.