Kid Rock says his upcoming tour could be his final large scale outing in a video released on his Facebook page on Monday. “I’m not trying to sell tickets, ‘oh this is the last tour, you better come out and see me,’ but it very well could be for the unforeseen future,” Rock says in the 4-minute clip. “At 51 years old, it’s not getting any easier to do jumps and carrying on on-stage. But I’m really keeping myself together, I’m getting prepared mentally, physically, working out every day, trying to eat healthy, all that (expletive), ’cause I want to be just top notch. I want to be at my peak for …