Bobby's drives a 1968 Ford F-350, first seen in 1.22 Devil's Trap. It has Lawrence County, South Dakota plates : 9NO3L1. This is probably a reference to Jim Beaver's role in the HBO Western drama Deadwood. Deadwood is the county seat of Lawrence County. After season 2, the truck isn't seen again and Bobby is seen using a car and a handicap-accessible van instead.