CARJACKING Why bother doing this? DM is perfectly able to afford this vehicle. Why not just buy one off a lot somewhere? If it sounds like lots more fun to steal one instead, why not steal one off a lot somewhere? Key? No problem. DM has lots of trailers and tow trucks. This one is destined to be chopped anyhow so who cares if it doesn't run?
THRILL KILL Why choose a hale and fit young farmer and family man whose sudden absence will definitely attract almost immediate LE attention throughout the region and across the nation? If this was the purpose, why not grab some homeless drunk off the streets whose loss might never be reported or taken seriously by LE or, sadly, by anybody else. Moreover, not to be unduly insensitive about this, but why choose a man at all when most women would arguably be much easier to overwhelm?
In either case, why would these city slickers phone their victim, then arrive at a farm, on foot, quite late at night wearing orange and red, flash tattoos (perhaps) and engage with the victim's wife? They seemed so intent on leaving a trail, it's almost surprising that they didn't leave business cards behind.
Neither of these motivating scenarios stand up under scrutiny, imo It just doesn't add up and, if it doesn't add up, it's because important parts of the equation are missing.