re: the bbm -- last night I was looking into this and didn't get too far...
On the issue of United Pipleine, if he worked there or works there-
from DH article ("A Boy's Life" 12/15):
"I dont have a college education, and I see how hard it is for me to make ends meet, said Mark, who
works at United Pipeline Systems. He wants more for Dylan, he said."
We've heard from a few people (ER, I think MR's brother?) that MR is/was? a truck driver and is out of town... United Pipeline Systems out of Durango has a Transportation Services branch (dept?). They use trucks/trailers. I couldn't find specs on if those would match the trucks he had at home that were towed but apparently those were returned to him and to each their own on what that means or if he has access to any other vehicles. Their "operation" is listed as "Interstate".
http://transportation-services.findthedata.org/l/1540809/United-Pipeline-System-Inc