Snipped again.
It should not create too much of a scent.
I'm looking for the weak points in the theory. It is possible that it was just another shopper.
BG, obviously, would be on the "helper" list. An extra incentive would be that her daughter be an heir.
Also, she
could fit the
incredibly vague description of the woman seen at the Southfield sighting.
Since neither of us smelled the interior of the car, I guess we are pretty much in agreement that it's possible that the helper did smoke, and dropped some ash, or it was transferred from soles of shoes from the parking lot.

OK?
BG is my top pick for helper because of all the reasons you and I have mentioned here. Also, as a woman with an ex- spouse with whom I share an offspring, I know that when there is trouble, the trust kicks in. I've posted in the private forum about how my very ill former spouse has turned to me for comfort in a time of distress, not his current wife.
He learned many years ago that I am loyal to him and trustworthy. Children bond couples in a unique way.
I expect that Ray and BG know each other extremely well after so many years together, too. He could count on her to think on her feet and she could count on him to have a plan B, contingencies, etc. if there was an unexpected glitch.
MAYBE they hit the road late on the 15th and took turns driving with one sleeping. The only thing they would have needed to worry about really, then, would be CCTV at gas stations and any dining areas.
Again, one of my " sidebars"- I realized recently ( duh) that traversing toll roads/ toll bridges, etc. are not a problem any longer IF the license plate is not on a BOLO list. Only the license plate and small portion of the car is photographed, not the driver's face. It used to be that the driver was visible, but not now. We just got a TXDOT image in the mail- toll paid at time of travel, but they wanted us to have the receipt, I guess.