I started to brake my vehicle well before a red traffic light. In the line of traffic, I was braking firmly but my vehicle would not come to a complete stop. At the red traffic light, my vehicle kept bumping a BMW in front of me. I began honking my horn for the driver of the other vehicle to move forward, but she did not. With my foot constantly on the brake, I put my vehicle into park. When I did that, it accelerated more. A man in a truck in the next lane saw that I was having difficulty braking, so he shouted taht I should turn off my ignition. I did. The vehicle finally stopped. The driver of the BMW approached my car asking what was going on. The man in the truck verified to her that I was braking, but couldn't stop my vehicle from bumping her. We exchanged information. I drove my vehicle to my service mechanic nearby. He could find nothing wrong. I took the vehicle to the dealer the next day. The dealership mechanic checked the vehicle and a dts was also called to inspect my vehicle. The also could find nothing wrong with the brakes, but they did fix my air conditioner. It was leaking inside the car on the passenger side. The rug was completely soaked. The also could find nothing wrong. The vehicle is now parked (delivered by dealership) in front of my home because I am afraid to drive it. I have done research about these episodes called "spontaneous acceleration". I also see that you have complaints similar to mine that suggest the same problem exists in other Altima's, as well as other make and model vehicles. Hopefully, you will investigate this matter. I refuse to become a fatality statistic by taking the chance of driving my car and having this unpredictable event occur again. Nor do I want to hurt anyone else. I want Nissan to replace my vehicle. I have done other investigating on the internet in relation to "spontaneous acceleration". I am quit concerned that the NHTSA is not investigating these complaints.

- Westfield, NJ, USA