general problems of the 2004 Nissan Frontier

This vehicle suddenly starts to accelerate on its own like it's in cruise control only it's not and I'm not pressing the gas pedal. It would go well only a 100 if I let it and applying the brakes does nothing. The only way of stopping the vehicle is to put it in neutral and one time that didn't stop it and I had to put it in park and turn off the key. I've taken the vehicle to 3 different garages and they are not able to figure out what the issue is. I've contacted Nissan and they have no recalls of this. I finally looked online and saw that other people have been in accidents because of the same problem. This vehicle is deadly to drive and I'm a professional driver so luckily I knew what to do when this happens. I am not able to drive truck safely and I'm not able to sell it or even give this to anyon because I would be responsible when they kill someone from the mechanical failures. I bought the truck for my teenage son and obviously he can't drive it.

After driving my vehicle to work (around 15 miles), the lights began to dim and the radio turned on and off several times. I parked in the garage where I work, and went to my office to get in touch with a mechanic. About 1/2 hour later, a police officer called because my truck caught fire. It caused damage to the parking structure, and obviously to the vehicle, including melting many of the components under the hood, as well as smoke damage to the inside of the truck. It was totaled.