Forget Orwell’s 1984—20 Years Later It’s Our Cars That Are Giving Us UpSomeday it’ll happen, probably when you least expect it. Just as you countersteer while drifting out of a tight corner, or after you punch the brakes hard, you’ll hear the mechanically animated female voice emanating from your car’s audio system: “Collision detected. Calling OnStar.” You need not be anywhere close to a collision, really. For our road test team this summer, it was just a matter of running a routine slalom in a Chevy Malibu Maxx—without so much as hitting a rubber cone—when OnStar called to check up...