For want of any other info, I've just been catching up with reading Topix/Eufaula, and that can be a hair-raising experience in itself---way too many trolls, etc. etc. A bit of useful info (this is from the Authorities Search for Missing Eufaula Family thread), an answer to an inquiry about rivers, creeks, or mines in the area of the recovered vehicle:
"No river or creek close by no mines where their truck was just a lot of trees and rocks"
(page 5, #117,
http://www.topix.com/forum/city/eufaula-ok/TJJINE5FVDHE8JPOI/p5 )
Lots of posters are like us---they can't believe this case isn't getting local attention, and hasn't gotten national attention.
And meanwhile, off-topic a bit but relevant to the general theme of missing persons in the area, on Loved Ones Speak Out On Search for Missing Eufaula Family, an aunt claims that her nephew has gone missing from Eufaula, and she can't get anyone to listen to her or care much about it (pages 5-6, #94, 103, 104, 106, 109 [she names the nephew here], 115, 121,
http://www.topix.com/forum/city/eufaula-ok/T75OCCCMAFJTU8FL5/p5 )
Oh, also on the thread above, an alleged police officer/possible troll writes, of the Jamison family, "Trust me they were not very good people." (page 5, #120) He is taken to task handily by another poster (page 5, #122).