When the brakes are applied while in drive the rpms randomly increase from 500 to 1000 and the car inches up unless I apply more pressure on the brakes. This is usually noticeable while I am in the drive-thru at fast food restaurants while waiting in line. While waiting for 5 or so minutes it usually occurs 2-3 times. I rarely notice it happen at traffic lights as they usually don't last that long. It happens at least a few times a week.

- Delanco, NJ, USA

I was pulling into a parking space, driving very very slowly, about 1 or 2 mph, and my vehicle experienced unintended acceleration, bolting forward very abruptly. I was able to stop the car by applying extreme pressure on the brake for a few seconds. The dealership reviewed the car and said there was nothing wrong. They suggest that I might have stepped on the brake and accelerator at the same time, which they did to replicate the experience. However, now that I have had opportunity to consider that, I don't think I could have effectively pressed both simultaneously to achieve that abrupt acceleration. If that were possible, and it happens mostly in Lexus and Toyota, is it a design flaw which might enable that?

- Bethesda, MD, USA