Likewise on your posts!
I agree about the age estimates of the witness, and we don't even know if she said she was sure or if only when pressed, etc.
I've thought it's not beyond the realm of possibility all along that this sighting was Lilly and Jack. It has always seemed way too much of a coincidence to me, the sighting of 2 kids fitting their descriptions overall IMO, on the very day and around the very time on the very road by the property they disappeared from, to be "a nothingburger".
As far as the woman the witness said she saw standing next to the open back door of a goldish car as the girl & boy were approaching it IIRC, that's another kettle of fish, IMO.
There isn't any additional info on LE's pursuit of that potential lead thus far. However, at the point the witness gave their statement it was several weeks later, and their statement about the woman and car could still be being looked into by LE. So perhaps why no Amber Alert type of public warning BOTLOF for such a vehicle in response to an OP or two asking 'why not?'.
It was likely unvetted by LE at the time "it came out", it didn't "come out" willingly by LE AFAIK, it was from a FOIA request by media, so may never have come out if they were still unable to verify it and/or this type of vehicle wasn't seen on CCTV they're reviewed leaving the area. Even though that doesn't mean the goldish car if it had Lilly and Jack in it, couldn't have taken back roads even leading to a hiding spot in an old barn out in the middle of nowhere, etc. IMO.... so it may have gone nowhere.
As far as the clothing the witness said she saw them wearing (the girl in a blue tank top with ties/straps, the boy in shorts, IIRC), these outfits would appear to be (a) not what their parents said they were last seen wearing/had slept in, and (b) sounds like they were underdressed for temperatures around 45 degrees Fahrenheit that morning:
If it was Lilly and Jack dressed that way, it could indicate they decided to get dressed for school and sneak out and walk towards town or get a ride there because they didn't want to stay home with sleepy parents another day and were bored and weren't that sick/their coughs were better, which has always seemed like a possibility as well, IMO, from the beginning. As far as being underdressed, IIRC their school said this had happened before, and if they were dressing for it getting warmer later in the day on a Spring day that didn't seem that cold to them, they could have been dressed like that.
I hope some more evidence will come to light soon on which way it is leaning for LE, if it is, if they were picked up by someone walking along the road (known or unknown to them) and it is just a matter of time for the to be found.
MOO