Fail To Accelerate problems of the 2006 Dodge Magnum

I was driving when the vehicle failed to accelerate over 55 mph (sometimes it would not go over 35 mph). The failure resolved temporarily when the vehicle was restarted. When this does occur the electronic throttle position and traction control light both come on and the car revs up loudly until it is shut off. It is dangerous when you are going 65-70 mph on the highway and the car drops down to 35 mph. Now that the weather is colder it happens more often including as soon as you start the car. There also is a lot of shaking while on the highway or while braking. I took the car to a Dodge dealer and they said the suspension is extremely loose, which again is dangerous because the wheel could just fall off. I also have the problem that I cannot get the gear out of park at any point. I did find the recall and called Chrysler, but they say my VIN is not part of the recall (why not? it is the same problem). They notated it, but have not done anything to help me. I have to keep my car in neutral and put the emergency brake on anytime I park. There have been several occasions I cannot park in spots because even with the brake on the car still rolls. I have read several other complaints on here and see these are all common problems and may all have recalls and I feel my car should be included in those.