Car Accelerates On Its Own problems of the 2011 Jaguar XF

Tl-the contact owns a 2011 Jaguar Xf. The contact stated that after depressing on the brakes and activating the push to start feature the vehicle suddenly accelerated in reverse without any warning. The vehicle suddenly stopped at the end of her driveway. The vehicle was later towed to the dealer. After running diagnosis they advised her that the report was sent to the united kingdom for interpretations. The vehicle was not repaired. The manufacturer was contacted and they offered no assistance. The failure and current mileages were unavailable. The VIN was was unavailable. Tb.

I was on highway with my family travelling 60 mph when the car suddenly accelerated. . I took my foot off the gas and the speed failed to decrease. I applied the brakes which did work but the engine still continued to race. . The brakes overtook the acceleration and slowed the car but each time I took my foot off the brakes the car resumed accelerating at a high speed( without my foot on the gas. ) I slowed the car by applying with force the brakes which was causing a burning smell probably from the brake pads. I drove the car to the closest shoulder of the highway ( about 1/2 mile) that I encountered at which point I placed the car in neutral while it was still moving slightly while my foot pushing hard against the brake. . While the car was in neutral the engine still continued to race although the car was stationary at that point. I turned off the engine and then waited about five minutes. After five minutes I turned on the engine at which time it was not racing. The car was taken to my Jaguar dealership and left there for three days. A report was sent by the dealer to Jaguar although my dealership was unable to determine the cause of the sudden acceleration.