The truck used in the escape is a mid-1970s Ford F350. The truck that crashes and rolls over in the chase scene is a late '60s Chevrolet/GMC C30. The grille is not shown, and the fender logo is obscured, but at 5:44 when the guard opens the door a blue "GM" sticker is clearly visible on the door frame.
There is a "See more of America" poster mounted near the top of the window when Hopper gets ready to use the payphone. The poster moves to the middle/bottom of the window when it is seen the next two times (presumably to allow a camera inside the building to film over the top of it when looking out onto the street.)