Let's pretend like I have a field of turnips, and there is a high end-restaurant 150 miles away that makes the world's greatest Turnip Soup with the first turnips of the season. But, the turnips need to be in the soup within 2 hours of being picked to be worthy of this recipe, and to justify the long lines of turnip soup connoisseurs. And it is only good with the first turnips of the season. After that, the opportunity is lost. Can I contract with them to sell them the 25#s of turnips, and fly them in my personal plane to deliver them for the $3 per pound I charge for turnips? And let the chef know when I am 30 minutes out so he can start boiling the broth. Can I charge them a thermos full of soup for my delivery fee? Is all this flying just "incidental" to my turnip growing enterprises?