I'm pretty sure they were a lot closer than 9 miles from Coston's home, but I'm not positive.
This area is all remote. Their homes are in a remote area. It's not like they left a big city to go out in the country- it's all country here.
It is not a 46 minute drive from Centerville to southern Wayne County. I would estimate it to be more like 20 minutes. He might have gone up to Grayville and got on the interstate, then pulled off at the Burnt Prairie or Fairfield exit and dumped the body over the county line. Or he might have stuck to the country back roads...either way, it shouldn't take that long to drive there. They have not released the exact location where the body was found, so I can't really say for sure.
I'm thinking he wanted it to look like Jacob killed Jessi. If they couldn't find his body, it would look like he was on the run.
And honestly, if he hadn't confessed, it might have been a very long time before they found Jacob's body. This could have gone on for years, unsolved.
We don't know yet. I'm pretty sure the bumper was found at the campsite, but I'm not positive. And I respectfully disagree that Coston hit him with his truck to cause blood to get on the bumper. The blood could have gotten on the truck when he moved the body. The autopsy didn't show any signs of anyone being hit by a truck, that we know of. I don't think he hit anyone with the truck. I wonder if he might have hit Jake's truck, though, and maybe that's what started an argument. (Just speculation)