Sorry to belabor this point, but why have a car that needs some maintenance, tags, inspection, $$$, if you don't have a driver's license and can't/won't drive it. This makes no sense. For whatever reason, this bugs me.
It could be that he’s just a young guy saving money and kind of lazy- Didn’t need to fix the car or pay the insurance on it since he’d moved in with his gf and he could use hers.
Personally, the car doesn’t bother me much. It doesn’t strike me a weird that he didn’t keep it up, and I also can’t come up with a scenario where his car in this case makes a difference in his disappearance.
MOO.