Speed Control Springs problems of the 2008 Toyota Tundra

Purchased a 2008 Toyota Tundra sr5 double cab . . From day one had problems with my accelerator was too springy and sensitve. On numerous occasions had difficulty keeping accelerator in control . Took it back to the dealer several times where they would hook it up to the computer only to tell me there was nothing wrong . Although I had talked to a Toyota mechanic and he told me there would probably have something come out on this matter because he has seen problems like this before . . I went in for the recall and it seems there is a worse problem now . . I truly believe this is an electronic problem because it seems to coincide with the transmission which is also electronic . . This problem is on going . Especially when proceeding from a stopped position.

I have a 2008 Toyota Tundra truck 5. 7 v8 extended cab 4x4 my wife and I drove from chandler az to idaho ,then to yellowstone, then back to salt lake and then to phoenix az till then ever thing was great the truck ran very well. We coming down interstate 17 from flagstaff to phoenix about 3/4 of the to phoenix. I was traveling at the speed limit at 75 mph and had just punched the accelerator pedal to pass a car while going up hill. The accelerator pedal went down to the floor and would not release back as normal . The truck proceed to accelerate to 90 mph and at this point I again pushed 5-6 times on the accelerator pedal to have it release but it continued to go faster to 100 mph at this point I knew we in deep trouble and danger. I was pushing hard on the brake and trying to move from the left lane in traffic at night to the right lane to try and stop the truck . I got to the right lane and to the shoulder and hit the emergency brake and was stamping hard on the break pedal and trying to shift out of gear to neutral . In the panic I am not sure what all happened but the truck lunged forward very hard then died / engine stopped . I stared the engine and tested the accelerator pedal and it seemed to be fine , I checked for the logical things like the heavy rubber floor mat, had it got pushed up on the pedal but this was not the case as it was 4 inches away and it has rubber knobs or studs that push into the carpet and will not slide also my left foot was firmly planted on the mat at all times . No way that mat was the problem. There was no dirt etc as the accelerator has a heavy spring and the pedal is 3-4 inches off the carpet. I do not feel safe driving this as it scared us a lot and we have lost confidence in this truck and Toyota. Also, the battery shorted out internally. Updated 11/13/09.