The car has been having intermittent electrical problems and was brought to the dealer many times for repair. The "radio" system has been replaced twice after various electrical problems occurred. The car has also intermittently had a problem where the engine revs excessively and the car does not handle the way it should. It's almost like its a manual transmission that's not being shifted properly. The only way to stop the problem is to turn the car off, and back on which resolves the issues. It generally would then not recur for months. The dealer has not been able to reproduce that problem. Yesterday, while driving the car in heavy traffic, the engine revving problem happened twice. The second time I became very concerned and was trying to get out of bumper to bumper traffic to a safe place. While attempting to get to a place where I could pull the car over, I was moving forward very slowly (had released the brake, but not touched the accelerator) when the car in front of me was stopping again. I braked, and the car lurched forward with force and hit the other car. I braked harder and the car again lurched forward, hitting the other car a second time. I threw the car into park which stopped the motion. There were no serious injuries but both cars sustained damage and I called roadside assistance to tow my car to the dealership because I felt it was not safe to drive. The dealer repeatedly tells us there is nothing wrong with the car. Someone could have been ki