Whether or not you have a TOYOTA or another brand not affected by a re-call, if your car speeds up and you are unable to brake or slow down, this is what you need to do.
DO NOT turn the engine off. When you do this, all of the power systems shut down - power brakes, power steering and all electrical systems.
DO put the car in NEUTRAL and do what you can to get to the side of the road. When you are safely out of traffic, then you can turn your engine off.
Its better to burn out an engine or computer than to have a wreck and be seriously hurt or worse.