Barry Berman:

When I first heard that Mercedes is integrating wearable technology—such as Pebble smartwatches and Google Glass—with its smart-vehicle systems, I thought the luxury automaker had a taken just a sip or two of Silicon Valley Kool-Aid. So I tried it out.

Turns out, a week of driving a 2014 Mercedes CLA with Pebble tied to the car’s digital nervous system didn’t dispel my doubts about either the wisdom or usefulness of what I came to think of as wearing-while-driving. But I do have to give Mercedes credit for a gallant inaugural try at making the concept work.