Tracker, I wonder how this fits in with Kevin driving into that driveway all the way up to the house and coming back out - about a half hour to an hour right after the abduction happened? Is it possible those are his tire tracks? It's hard to believe he would have gone through there twice and not obliterated tire tracks there ahead of him. I would think the deepest, freshest tracks would have been his.
(In case you're not familiar with the timeline, the 2 remaining boys ran home, their sister's babysitter called her dad next door, and he came over and called 911. Cops arrived fairly fast after the 911 call. Kevin saw the cop cars go by his gf's house with their lights flashing and he ran to his car with his gf and followed them. He lost them along the way and turned into DR's driveway to turn around, but he went all the way up to the house and turned around and came back out according to him. So he would have been there well within your time limit.)
Y
Once Kevin came forward in 2004 and told LE he had driven in there and turned around, they totally stopped looking for a car, and concentrated on someone local It seems to me to be because the tires on Kevin's car matched the tire prints they found in DR's driveway. IMO, that would be the only thing that would totally stop them from thinking a car had been used.
We need to find out what kind of car and what tires kevin was using.