According to NDCourts.GOV Tommy was arrested by Fargo PD on 9/12/2014 for DUI and Minor in Poss or MUI. Also coincidentally C MC was also arrested for the same MUI or Minor in Poss on the same date. As far as I know it is supposition that the car was towed at all. We know Tommy did not have a vehicle at college, but did the vehicle belong to C MC, I do not know for sure. If Tommy pulled out of the roadway when pulled over the vehicle could have stayed there and not been towed, IMO.
IIRC the K-9 unit and dogs were brought out when Tommy was still missing. Had there been any indication from the K-9 of any real direction I believe much more would have been made of it at that time. One reason the scent MAY HAVE gone for a "short way" is that Tommy got into a car there.
What I find the most interesting about this case is who Tommy was with that night (JW), and the fact that ALL social media from that individual has since disappeared. And that other roommates do not discuss him at all. Did he move? To me there is something hinky about all that. It's as though he disappeared from the scene.
JMO's