The driver was pulling into a friend's carport. After crossing a small curb her foot was taken off the gas and was moving to the brake. The car was going slightly uphill as slow as a car can go with no gas pedal depressed. The car then accelerated as if someone pressed the gas to the floor. In a matter of 8 feet it gained enough speed and momentum that when it hit our friend's parked car the 4 door SUV was pushed forward 4 feet. The gas pedal was never pushed by the driver. No failed component was ever identified by multiple inspections by the Toyota dealership, the insurance company, the body shop and the 3rd party company hired by Toyota to download the ACM data and the Vehicle Control History. We had filed a complaint with the Toyota Brand Engagement center hoping Toyota would make a proper investigation. A police report was made also. No one was injured but the homeowner was standing a few feet away. It could have been much worse. There were no warning messages, the emergency braking did not engage, and the airbags did not deploy. Earlier in the day the car's proximity sensors were beeping with no indication of what was setting them off. It took 3 cycles of park to drive to stop the beeps. The driver even walked around the car to try to identify what was setting it off. After the crash the passenger side rear window went down by itself and the rear liftgate went up. It took 7 weeks for Toyota Corp Legal to respond saying they found nothing wrong. To this day they have no