A neighbor of mine had a can get under the brake pedal of his tractor, while he was going downhill. He's lucky to be alive and the tractor was major f'd. He had to take a loss and traded what was left for a replacement tractor.
So far the truck is great. One problem, minor, was getting the optional auto parking brake to work. I remember the salesman trying to show this feature to me, and he could not get it to work. I said, don't worry about it, I'll figure it out. This was as I was taking delivery, after the truck had been in the service dept for 34 days. I thought they knew of this problem and rush it out the door to get under the 30-day lemon law.

Well I tried every combo, engine running, not running, parking brake on, parking brake off, foot on the pedal, foot off the pedal, etc. etc. and nothing worked. Then one day, after I had decided to live with it, it started working. Has been working for a month. Go Figure!