Driving on 55 mph straight two lane road when car ahead slowed. To recover energy to the battery, dropped from "D" to "L" in gear selection rather than using brakes (was plenty of distance, but not enough to coast). Car in front turned off to right. I advanced selector to drive, but overshot into neutral. Realized my error when pressing accelerator yielded no speed increase. Put selector into "D", verified visually and pressed accelerator without result. Verified again visually that selector in D. advanced deliberately into N, then back to D, then reapplied accelerator with functional result this time. I am a PE with siemens vdo, retired. Since vehicle is single speed "transmission", I assume computer glitch

- Hardyville, VA, USA

2/24/17 while driving on a public business 2 lane road with 30 miles battery life and 150 miles gas available, the car driving at approximately 25 miles per hour on a very slight declining slope when it completely stopped in the middle of the "fast" lane of traffic on a four lane road - two lanes in each direction. The warning "propulsion power reduced" and check engine light were both on. I was only slightly able to control the car by forcefully turning right into a driveway across another traffic lane while rolling slightly downhill. I was only able to make it into the driveway before I started rolling backwards and I forcefully had to keep my foot on the brake so the car would not roll. When I turned off the engine, the hazards went off so I had to turn the engine back on so that the hazard lights would work. The tow truck driver was able to load it onto the stake bed and told me that it was working fine. No errors on display. It sat off for about 5 minutes and he drove it onto the stake bed. The Sierra Chevrolet in monrovia ca had the car for a week, but said that the codes did not show up when they tested it. And they even drove the car around town for 70 miles. I explained to them that this wasn't the first time that the code showed up but the other two times, it showed up the car lost power, while driving up a hill at about 35mph, but immediately restarted itself....and the code disappeared. I informed the dealer that a full charge from my house used to be more than 40 mile range, now it is down to 30 - 35 miles...never 40. I got the car back with no work done. On the freeway it had trouble going more than 55 mph so opted for slow lane rather than the usual car pool lane and immediately got off the freeway. This was a very straight freeway, no inclines. Problem still exists, feel manufacturer needs to be notified as it just stopped!

- Altadena, CA, USA

Friday October 30 at 1 pm pacific coast time, my Volt lost all power on the middle of the san mateo bridge. There was no shoulder and the car went from 70 miles an hour to a dead stop in about 100 ft. I had a "propulsion system failure" message on the display screen. I was nearly rear-ended by a semi, who in turn nearly turned over trying to swerve out of my lane. The semi nearly pushed another car into san francisco bay. This is a dangerous vehicle and the government should not allow it to be sold.

- Livermore, CA, USA

Total loss of power climbing a hill at freeway speed. The behavior was like the car had shifted itself into neutral. This then manifested itself three other times over the next 20 miles of driving.

- Pacificia, CA, USA