On a test drive of a 2016 Chevy Cruze, the steering wheel seemed to be ... 'twitching'. Just little jumps. We were going ~40 mph on a straight, smooth, road. There was no pulling, or any other discernible problem. When I later drove the same route in my own car, there was not disturbance.
Assuming I didn't just imagine this, what might be the cause? The Cruze has some form of Electrical Power Steering. (EPS)