Personally, I would not recommend trying to hold your turkey for a 5 hour drive. It likely won't be hot when you get there and even if it's still warm, it will NOT be the best product.
As far as Plowboys, can't you order it online and have it by next weekend?
Big JT's Smokin' BBQ Competition Team
"The path was worn and slippery. My foot slipped from underneath me, knocking the other out of the way, but I recovered and said to myself, 'It's a slip and not a fall.'"