My transmission/engine and brake system failed. I was slowing down to probably 5 mph to make a right hand turn into my driveway from the street when the engine started racing. I heard a loud whine and the car started to speed up. I jammed my foot onto the brake to slow down but did not have the time to try to put the transmission into neutral. The car was not slowing down so I turned right to hit my tree rather than proceed straight and crash into my garage. When I hit the tree there was a large jolt and the car stopped. NO airbags deployed and I felt the impact on my right foot that was firmly on the brake; I checked to make sure I was not inadvertently pressing the accelerator. This same issue with the engine suddenly revving happened one time a year ago but stopped when I put the car in neutral.