Why did DM and MS, together, park the Yukon somewhere other than TB's driveway?
My take on it is they parked/left the Yukon out of site because they assumed that was the most identifiable feature of their visit, that no one would have seen their faces/features enough to be identified later... just two guys...no vehicle visible.
If there were only two of them, and they were planning on NOT coming back with Tim's truck, why would they BOTH go to the door? Why not MS just drop off DM around the corner from TB's and then wait for the test drive to stop at a designated spot? Then there would only be one person to try and ID later, not two.