The road he was on was quite remote, but it also happens to be the road you would end up on if you missed your turn in Luling that you would normally take to head to I-10 and Houston. If you are on 80 and you failed to turn right on 183, you would ultimately end up on the road his car crashed on. I think your theory is mostly accurate except it doesn’t account for not finding the body. They did numerous searches and didn’t find anything anywhere. His cell phone was found between the seat and console, out of sight. My possible theory is that he accidentally misses his turn, ends up out there in this dark remote road, wrecks, possibly due to intoxication. Can’t find his phone, is discombobulated due to accident and intoxication, and wanders off to a local property to get help where a homeowner sees a fucked up bleeding guy banging on his door, gets scared, shoots him, then panics and disposes the body somehow. That road has some creepy looking remote houses that are undoubtedly inhabited by weird rednecks. I drove down in and got True Detective vibes. This explains all the evidence in one way or another. I suppose it is possible some wild hogs found his body out there and devoured it too.