I have another theory
What if DM and his body were in drug trafficking business , were either hiring or unknowly targeting potential victims who were travelling to USA and coming back with drugs or money ?
what if TB traveled to USA and by some coincidence that truck was stashed with small package somewhere in the truck , the source on US side said this is the car, and has for sale sign and so on this is where the package is located,
now if the interceptor missed the vehicle at the border they panicked and they didn;t know where that truck was heading, the source on US remembered certain things about car, and that car was listed for sale,
now DM with his buddies were looking for that truck they looked through advertising and found two identical tracks dodge rams, they went to first seller test drove it but the package wasn't there which is why they left him alone
now they contacted second seller , he agree to meet with them on short notice they drove it and the other dude was looking through stuff perhaps checking the truck and the package wasn't there.
perhaps they stopped at that place near hotel , now TB got suspicious and perhaps the other dude started to opening body panels and TB told him to stop it, and fight broke out and he was killed with knife and DM panic they load him to his truck he was bleeding, which is why seats were missing drove to either airport or to the farm and left the car there they returned to home , so they come with plan to burned his body and hide the truck ..
what do you think ?