My route used to be adjacent to a training route, and rather than continually having to drive out to open the door for the newbies who would inevitably lock their keys in the back, my center manager gave me a master key so that I could do it instead.
I wound up getting a call one night at about 8:00 from our OMS...while I was on vacation. A newbie had locked his keys in the back, there weren't any management people available to drive out to him, and he had stops left as well as pickup volume that needed to get back to the center ASAP. I live in the same city that the training route delivers to and the newbie was parked less than a mile from my house. The OMS begged me pretty pretty PLEEEEASE to drive over there and let the poor schmuck back into his truck. So being the nice guy that I am, I went ahead and did it. When I got back from vacation, they added 15 minutes of "clerk time" onto my timecard so that I would get paid for the time.