Im sure the weeks it took to get info on the car were over a long time ago and they have been working 24/7 since then to find this car. I'm sure they didn't release it publicly because they were working on it on the back end.
Now, it's thankfully being released because they now need our help. There will now be the entire public on the lookout and the chances of someone knowing something about this car is almost guaranteed. I live near by and I guarantee that the public will be on it! I know the car is probably long gone, but all people need in this case is a little bit of info and just look out perp.
I have always believed that if she was kidnapped, she must have been incapacitated in some way and that would explain why no witness placed her in the car. Of course, this car could turn out to be not related, but to have hope for SL and for her family is worth so much right now.
Deep down inside I keep hoping that she ran away and is living some fantasy life somewhere and this news, although encouraging in that we may find her, it's also somber in that we have to think of her as being taken against her will.
Good luck to all of us novice investigators out there who will find where this car is and to whom it belongs!!