I think it's more likely that whoever was driving, they went straight across 183, which turns into Austin street which, if followed about 1/4 of a mile, turns into SFR. Taking a left at that light, the driver would have had to take a slight right off another Highway (I believe it's 86 but I'm blanking out) then turned on Pumper Road, then turned left on SFR. If Jason was driving, I can't imagine that's the way he would go. Seems much more likely he would have gone straight across 183 and continued onto SFR. The accident site is 5 miles or so past that light.
No idea what happened. I've seen all the speculation on this site, but the whole situation is just too weird to even guess at what happened. As I initially said, I believe if he was incoherent and wandered off and didn't make it, the searchers would have found something. My family and I have tried to guess what might have happened and we've talked to others in Luling about it, but everyone is just guessing.
I will say that for as long as I've been out here and of driving age, I've seen a lot more "sketchy" people on those country roads. I've ridden a 4 wheeler multiple times past the accident site (prior to all this happening), but I don't think I'll be doing that anymore. I've been nervous a few times myself coming up on a couple of cars stopped on the side of the road.
And as far as a continued search, I haven't seen any sign of that. I'm sure, as LE says, they are waiting on more information.
Also, I'm more than happy to answer any other questions about the area, etc. I think all the guessing about what happened has already been covered, so I don't have anything more to offer on that front.