Driving on the highway, nothing unusual or out of the ordinary. Within a 30 second span of time, the car started making a horrible rattling sound, followed by a loud snap sound, then smoke, then I was off the road with oil pouring out of the bottom of the car. Towed home, car was dropped off at the Chevrolet dealership mechanic. As far as I can tell, it fits the description that others have had with this car, namely that some apparent oil consumption issue that never came up on warning lamps resulted in the catastrophic engine failure that nearly launched me off the highway. The vehicle is currently awaiting diagnostics from the mechanic, and I have yet to hear back from them over a week later. There were no warning lights of any sort, and the oil life meter said there was 38% oil life remaining before it would need an oil change. If I had known about this issue before I bought the car, there is a 0% chance I would have bought it.