I own a 2004 model Pruis that has 75,000 miles. Today the vehicle started acting very strange. When you come to a stop in the vehicle and put your foot on the brake the engine begins to accelerate . If you are driving and put your foot on the break the engine does the same. When I say accelerate, the engine is acting as if you are pushing the accelerator when you are not. Also, the cruise control stopped working. The check engine light is not coming on. Has anyone experienced this and have any advise?