I was turning into a parking space, engine revel and the vehicle jumped the curb and crashed into a tree. Toyota said it is not an accelerator problem. what would cause the engine to rev uncontrollable

Hello, inadvertent application of the accelerator is the cause. Also ensure you do not have a floor mat that is not anchored properly or correct for the vehicle; a floor mat can also cause an accelerator to "stick" physically. I would agree with Toyota, the car itself does not likely have phantom issues that causes this to happen. I'm sorry.