Engine problems of the 2008 Toyota RAV4

At approximately 11:15am Saturday January 22, I was stoppped at a stop light on spit brook road in nashua nh for about 30 seconds, when my leased Toyota Rav4l suddenly reved it's engine and started to move forward. As it did, I pressed on the brake as hard as I could, and the car continued to rev the engine and suddenly jumped forward hitting the car that was about 6 feet in front of me. At that time, I put the car in park, stopped the engine and checked to see if the woman in the car ahead of me was hurt. She was not. Her car had no damage to it. She went on her way. There is minor damage to the from end of the Rav4, including the bumper and grill. I got back into the car, and took it to the Toyota dealer in nashua nh, that was a mile or 2 away, and explained to them what happened. They tried to blame this on the floor mat issue, and then tried to blame it on me, saying that they think my boot might have been on the accelerator. I told them that was not the case. The car was stopped for about 30 seconds when it suddenly reved the engine and accelerated into the car ahead of me. The car was left at the dealer for them to take a look at on Monday January 24th, 2011. They told me that they would look into it and get back to me.

Idle speed kicked up unexpectedly at a stop light. The engine was close to full operating temperature, about 1. 5 miles from home. The air conditioning was not on. The defroster was also not on, so there was no reason for the idle to kick up. Vehicle was stopped at a light behind another vehicle at an intersection. It lurched forward, but was easy to hold back with the brake. I then put my left foot on the brake and released my right foot to be sure that both brake and accelerator were not being pressed simultaneously. The high idle continued, about 1100 rpm in drive. I then put the vehicle in neutral and the tachometer read 1300-1400 initially, then slowly dropped to about 1000. Once back in drive it dropped to about 800 rpm, which is normal operation. It has never done this before or since. That particular intersection has power lines and/or transformers that have interfered with my am radio in other vehicles, but not this one.