Cruise Control problems of the 2002 Oldsmobile Alero

When I put my car into drive and let off the brake the car accelorats by itself. I do not have my foot on the gas and the car will continue to speed up until I hit the break. While breaking the car seems like it is still trying to accelorate. You have to push the break all the way to the floor and hold it to try and maintain a full stop. If I put the car in neutral the rpms shoot way up. If I brake and stop the car and quickly throw it into park and shut it off and restart the car it usually solves the problem but it is definitly not a fix. There is just over 180,000 miles and I have just recently started to notice the problem it has happened a handful of times and I am trying to find the problem and get it fixed. This is very dangerous. The blinkers also peridoically stop working and can be fixed by clicking the hazard lights a few times but again not a permanent fix. The cruise control has gone out and the trac control doesnt turn on. This car is becoming a death trap and expensive and dangerous to drive!.